Are Deco, Aimar and Riquelme the best player in his playing position?

Question

http://footballchampionsleague.blogspot.com/2008/07/pablo-aimar-in-benfica-one-of-best-in.html

Answer 1

On their day they can be.

Answer 2

Well it depends what position you class them as. Obviously they're incredibly creative, and in this case surely you can't rule out players like Fabregas and to an extent, though more defensivly Pirlo. However like Aimar who's more attacking you can't rule out Kaka, who's better going forward.