Below is a table that attempts to factor in offense and defense, raw data and era-adjusted data. It's an average of their 7 best era-adjusted seasons.
The offensive stats are ones you already know and I averaged out the NHL average goals per game in their best seasons too.
ES GA/GP - Even strength goals against per game is a player's 'minuses' turned into a per game stat.
The table is sorted by a composite stat subtracting era-adjusted PPG - era-adjusted minuses per game.
Observations
Forsberg is the best - despite having his best raw seasons in lower scoring years, Forsberg outproduced (raw PPG) everybody else while posting the 2nd lowest minuses per game (very close to the lowest).
Minuses per game - I like how the test of it's perceived accuracy turned out. The table identifies Forsberg and Alfredsson as the best defensive players and Kovalchuk as the worst. That's what I would have expected. Though I did expect Ovechkin to come out worse than Malkin, though that might because I was ignoring that Pittsburgh has played some very high event hockey over the years (like a lot of 8-6 playoff game scores for example).
Kovalchuk wasn't nearly as great as his numbers suggest - his offensive numbers weren't as special as you think they were and he got eaten alive defensively because he only ever played to pad his offensive stats. That doesn't even factor in that he was 50% more power play time than any of the other top forwards in the league.
For the people who feel that the Swedes would accomplish more on the ice by being better defensively, the era-adjusted per game stat does suggest that may be correct.
Swedes total = 1.55 (71 + 51 + 33)
Russian total = 1.33 (56 + 55 + 22)
Avg GPG | Player | GP | G | Pts | GPG | PPG | ES GA/GP | Player | EA*GP | EA*G | EA*P | EA*PPG | EA*GA/GP | EA*PPG/GA |
2.76 | Forsberg | 69 | 27 | 91 | 0.39 | 1.32 | 0.66 | Forsberg | 69 | 29 | 99 | 1.43 | 0.72 | 0.71 |
2.85 | Malkin | 71 | 36 | 92 | 0.54 | 1.30 | 0.81 | Malkin | 71 | 40 | 100 | 1.42 | 0.86 | 0.56 |
2.88 | Ovechkin | 77 | 51 | 98 | 0.66 | 1.27 | 0.78 | Ovechkin | 78 | 56 | 105 | 1.36 | 0.81 | 0.55 |
2.79 | Alfredsson | 72 | 31 | 81 | 0.43 | 1.12 | 0.64 | Alfredsson | 72 | 34 | 86 | 1.20 | 0.69 | 0.51 |
2.92 | Sundin | 78 | 36 | 86 | 0.47 | 1.10 | 0.77 | Sundin | 77 | 38 | 88 | 1.13 | 0.80 | 0.33 |
2.72 | Naslund | 79 | 37 | 80 | 0.47 | 1.01 | 0.71 | Naslund | 79 | 41 | 89 | 1.12 | 0.79 | 0.33 |
2.84 | Kovalchuk | 79 | 44 | 87 | 0.56 | 1.10 | 0.89 | Kovalchuk | 79 | 48 | 93 | 1.17 | 0.95 | 0.22 |
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Any higher end player could challenge for a scoring title if the head coach fiddles with their situation and they're lucky enough to be healthy.
load the top line
insane amount of PP time
offensive zone starts comparable to a QMJHL rookie playing in the Stanley Cup Finals
building a PP around that player
not having a reliable 2nd line
giving up on winning and actively making the team's game plan around winning an Art Ross for the last 1/3 of the season
allowing them to completely abandon defense to pad their stats
Non-generational talents can challenge for scoring titles over the short term if you give them the best situation possible to produce in. That doesn't make them 'Gretzky', it makes them fortuitous. That's why it's important to pay attention to their careers over the long haul, not just when they were in a good situation.
Btw, Alfredsson was outside of the top-10 in 2007 because he was moved off of the top line to create offense on other lines (partially due to the loss of Havlat).