It's both.
He isn't as dominate as he once was but at the same time the gap at RG between him and the next closest guard is so wide that even with him having a "solid year" by his standards is still better than all of the other guards.
The "getting recognition based on past achievements or his name value" is a cope out for haters because them simply saying that means they don't have to answer the question of "okay name 2 right guards that should of clearly gotten the award above him" because reality is they can't answer that question.
They'll discredit Martin on the basis of "he only got in on past achievements" but won't say why or who should of truly gotten it