Saw more Modano than I have of Kopitar, I think the best thing I can say about Modano is that the only reason people have Patty Kane ahead of him as the best US forward is 3>1, nobody who saw them both really thought Kane was better.
I get that you're a Rags fan so you have an unreasonable over the top hatred of Kane and feel duty bound to trash talk him absurdly, but - are you serious?
Patrick Kane is one of 2 players in NHL history to win Hart, Ross, Smythe, Lindsay, Calder and 3 Cups. Mike Modano has 1 Cup and no individual awards. Modano was all-NHL 2nd team once, Kane was all-NHL 1st team 3 times, plus all-NHL 2nd team once. Many of the same voters who voted Kane those awards also were voting during Modano's career, and voted him no awards. They saw them both and thought Kane was much, much better than Modano. I also saw them both, and Kane was much, much better than Modano - still is. Kane's peers also give him the respect, w the Lindsay but also in the annual player votes where every single year he's 1st or 2nd in best stickhandler and best passer.
Kane is the only player in NHL history to have OT goals to win the 2nd round, conference final, and Cup final. Kane led his prime decade in scoring and was 2nd in playoff scoring during that decade. Kane has 2 of the 7 20+ game point streaks of the last 30 years, including the longest. Kane has 7 streaks as long as or longer than Modano's longest, 11. Kane has the 3rd longest assist streak in NHL history. Kane's first 2 hat tricks were in series clinching playoffs wins; he has 4 more career hat tricks than Modano despite having no regular season hatties his first 7 years. Kane is the youngest #1 pick to ever win the Stanley Cup; his teams made 5 runs to the conference finals or beyond, and in all 5 he either led his team in goals or was within 1 goal of doing so. Kane's teams are an absurd 16-1 in game 6. His only career short handed goal was in the closing seconds to tie game 5 of a 2-2 series in a year his team won the Cup. He is tied for 3rd all time in playoff OT goals, w 5, 3 of which won rounds, another one of which prevented elimination. Kane's first career score of any kind in the NHL was a shootout goal at age 18 on Dominik Hasek. He also had the last regular season goal ever scored on Hasek. In 20 games as an 18yo, Kane put up 7g/15a/22pts. Modano got in only 2 games at 18 and was scoreless.
Kane in 269 fewer games trails Modano by 1.9 point shares and 90 points. He is already tied w Modano in assists. By adjusted points, Kane is already ahead of Modano, and 18th all time. By adjusted point SHARES, Kane has 5 regular seasons better than Modano's best season; and Modano has 4 seasons worse than Kane's worst season. Kane's career comps by adjusted point shares are guys like Gordie Howe, the Hulls, Marcel Dionne, Joe Sakic, Steve Yzerman. Modano's comps are guys like Mark Recchi, Marian Hossa, Keith Tkachuk. And that's just regular seasons - Kane is famously a playoff player who before his big contract didn't even care in the regular season. He is the leader of the only dynasty of the cap era, and is generally considered one of the most clutch playoff performers in NHL history. He is also clutch in the regular season, and is the all time league leader in shootout goals, shootout winners, and OT assists (4th in OT points behind only Ovi, Sid and Geno).
And your "saw them both" bit is especially funny. As if the eye test and personal direct experience of each would favor Modano. No. Kane was and even still IS a menace on the ice, and at the worst times (best for his team, worst for his opponent). Highlight reels for both are freely available on youtube. Kane's is full of him doing absurd hero stuff and highlight plays at the biggest moments in the biggest games, over and over again. He is probably the best highlight player ever or close. Also the NHL Playoffs logo is visible on the ice constantly throughout Kane's career highlight reel, probably to a greater extent than for any other player. Kane also was the best player on the ice late in the gold medal game of the 2010 Olympics, and his 3rd period of that biggest game ever, vs prime Crosby, is worth noting. He primaried on 2 American goals to take it from a 2-0 3rd period deficit into overtime, while also chasing down Crosby on a breakaway late in the 3rd and preventing a putaway goal.
The very thorough hall of fame monitoring site adjustedhockey has Kane currently 21st best forward career all time, with an outside shot of still ending up in the 'inner circle' of the greatest handful of forward careers ever. According to him Kane is the 8th most efficient era adjusted scorer in NHL history, and one of only a very few players in the cap era to be rated best in the league in more than one season. Mike Modano is rated 29th all time best forward career as of today, with Kuch and Marchand possibly pushing him out of the top 30 as soon as the next update.
Patrick Kane is a unicorn. One of the very special players in league history. Go look up the numbers of him and the other guy in this convo, Kopitar, in their two conference final matchups. And Kane wouldn't just do it, he'd do it with the best guys on the other team on the ice during all the highlights. On purpose. Kopitar and Doughty were always right there on the screen. All part of the show.
edited to add
Despite his 'worst defender ever' reputation, which is nonsense pushed by analytics leftists w an agenda using his injured/tank team years to push it, Kane for his career is around a +120 player at 5v5, and before the tanking and injury he was around a +140 player at 5v5 - about the same as McDavid, Ovechkin, and Geno. His minuses are all from shorthanded goals, goals against the empty net, and 4v4 deficits (Kane actually has always been bad 4v4) accumulated over his career. During the heart of the Hawks dynasty he was always a solid + in the playoffs. And he was out there even late, close, protecting one goal leads, you name it. A defensively stifling dominant dynasty never sprung a leak w him out there in the biggest moments, even as he didn't play w either Selke forward during those years. Quenneville trusted him implicitly. Also trusted him protecting a lead at the end of games w the other team's net empty.