I dunno. 37% of your list is unreleased. And I wouldn't count Yooka-Laylee as a great platformer, or even a good one.
This year doesn't compare favorably, so far, to 2014, which had Tropical Freeze, Shovel Knight, Freedom Planet, etc. Or 2010, which had Super Mario Galaxy 2, Donkey Kong Country Returns, Limbo, Kirby's Epic Yarn, etc.










