If you look at Gretzky's two highest goals seasons (87 goals in 74 games, and 92 goals in 80 games), I would suggest both -- esp., the first -- are indeed "better" than Ovechkin's 65-goal season.
In 1984, Gretzky missed six games, yet his 87 goals were a staggering 31 more than second place. I don't care about scoring rates, 31 goals is a far higher total than Ovechkin has won any scoring title by. Now, of course Goulet's 56 goals in second place that season aren't a huge second-place total for the era (Lanny had 66 the year prior), but from 1983-84 onward for about five years (until peak Mario arrives) there aren't any scorers with more than 60 goals (and 60 was done only once, by Bossy). Note I'm not counting Kurri here, since his 71 and 68 goal seasons had about 80% of the assists by Gretzky. Anyway, that was a huge individual goals season.
In 1982, it was the highest-scoring season in modern NHL history, so we have to put it in context, and Mike Bossy scored 64. But, again, 92 goals over 64 (Bossy not exactly a slouch in goal scoring history) is pretty staggering and still probably a bigger single season win than Ovechkin ever achieved.
Anyway, these discussions are kind of pointless because (a) Ovechkin is mainly a goal scorer, while Gretzky wasn't, and (b) it's not about Ovechkin's chances to score 895.