Kucherov is an amazing talent in the tier of Nathan MacKinnon, there's no question of that. He might even be the 2nd best player in the world right now, but it's really impossible to tell considering the team he plays on. You can just take a look at his points from last night, and analyze whether or not they could have happened in Edmonton.
1st Goal: Yanni Gourde takes a pass with speed crossing over the blue-line and makes a nice saucer pass to Kucherov who finishes deftly. This could not have happened in Edmonton. No player is both quick enough and skilled enough to set that up. Draisaitl could have made the pass, but he wouldn't have been quick enough moving forward, so the defenseman would have been in position to block the pass.
2nd Goal: Coburn makes a nice move standing up a forward on his own blue line and sets up Kucherov, who beats one defender and scores a nice goal. This could have happened in Edmonton, but I can't remember the last time a defenseman made a play like that.
1st Assist: Kucherov on the power play passes it to Stamkos on the left circle who wires a one-timer past the goalie. Not a single Oilers player has scored on a one-timer like that all season... this could not have happened in Edmonton.
2nd Assist: Point builds up speed and cuts through the neutral zone, and passes it to Kucherov, who gives it right back. Point backs up the defenders on the rush and scores on a nice shot. No player on Edmonton could make the move that Point made with speed, so this could not have happened in Edmonton.
3rd Assist: Kucherov makes a beautiful misdirection-pass to Point who makes no mistake. Very similar to a number of McDavid to Draisaitl goals this year. This could have happened in Edmonton.
So out of the five points he scored last night, it's reasonable to say only two of them would be possible with McDavid's supporting cast. What some people don't realize is that McDavid has to create plays from whole cloth almost every time he gets a point. Draisaitl cannot create plays on his own, but he is a good finisher... that said, he needs an open net to score on a one-timer. And what a small, vocal minority don't understand is that it's easier to get points when people make plays after you give them the puck, when the defensemen you pass the puck to know what to do with it, when you're not usually down 2-0 after five minutes, and you often have a 3 goal lead meaning that the opposition is either taking chances or giving up. But none of these things will be surprising to people who understand the game.