Your opinion is seriously flawed, since you pointedly ignore the fact he was playing in a totally different system, he became a star in a totally different system which suited him under Riikjaard (sp) and was easily one of the best in the world then.
You also ignore the fact that Argentina were not trying to fit a system around just him, but also with as many of their forward stars as possible, thats actually what made it unbalanced. Their current system isn't actually built around him either, you could shift him wide, or bench him and they could still play it very well.
Messi suits a number of systems, as he has already proven throughout his career.
Well as this is a game of opinions i respectfully disagree.