"if not individual skill?"
all kind of stats(lan, big events, majors, vs top10/5, play off rating, entry kills, adr, kpr, dpr etc etc), relevancy, consistency, achievments, individual awards etc.
who the hell cares that s1mple is according to you(since you just cant compare it in any possible way objectively) the best player individually? noone...kennys wasnt even top5 in 2014 even tho that he was by far the best player that year. s1mple has atleast 2 threats this year and his 1st place isnt secured by any means lol