Boss
Melodramatic, attention seeking space-attacker
Messi can go on and be a legend in football, bigger than Ronaldinho if he keeps his level for like another 4-5 years. But, IMO, he could never be the same artist as Ronnie on the pitch.
Messi's height, his acceleration and pace is advantage over Ronaldinho. Ronnie didn't have the same start as fat Ronaldo and Messi. He didn't rely on pace or acceleration to go past his opponent. If you have to man mark him it's tougher IMO as when in his prime, he'd still find a way to go past you. You can't think only of the traditional things, Ronaldinho had extraordinary style, alike Ronaldo. As for Messi the thing is - you simply know what he's gonna do, picking one direction with his steering type of dribbling, yet you can't do anything about it.
However English sides has proved to handle Messi well in the past. Ronaldinho simply destroyed any opposition in his best years - Italian defence(Milan), English(Chavs), Spanish(Madrid)...
In the end Messi probably would go down as the better player and would achieve more, but for me he doesn't have that rare "magic" that someone produces once in a while(read like Bergkamp against Newcastle, or Ronnie occasionaly).
Good post