He was a solid #2 Hart candidate in 2013. Wins it due to Crosby taking a puck to the face.
He was a Top 3 forward, arguably #1 in 14/15, albeit in off year for elite seasons by forwards. Bit overrated with a #2 Hart finish.
He was Top 5/10 in 15/16. Finishes 6th in Hart voting.
He was Top 5/10 in 17/18. Finishes 9th in Hart voting.
Starting in 14/15 he put an effort in on the defensive side of things (i.e. he wasn't a clear liability) for a few season. Then had one of the better Smythe wins of his era.
In 21/22, another 50 goal season at age 37 and 10th in Hart voting.
Since 2010, 1st in goals, 3rd in points and 6th in PPG (among Top 20 scorers):
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IMO, he was still in the conversation for league's best player after the 10/11 season, then was in the conversation for Top 3 forward through the 15/16 season, Top 5/10 through the 2018 season.
In a vacuum, a Top 10 player "before age 25/after his first five seasons", a Top 50 to 100 type player from 2010 onwards.