I'm surprised people still devalue the importance of talent, especially in short samples like the playoffs...
Take RNH and Garland for example: Garland outproduced RNH at ES in the regular season (42 to 38). In the playoffs, where checking is tighter and talent rises to the top, RNH outpaced Garland at ES (11 to 7 EVPs (rate)). That's the difference. Player talent becomes far more noticeable in higher leverage situations (like the PP).
EVPs are not everything. Even if a more talented player gave up something at ES to Garland, he would still be able to make it up by playing well with Miller-Pettersson-Lindholm, getting more out of each, and by converting PPPs. Oh, and by preventing goals on the PK.