totally disagree
Well you are in denial then.
I believe it was Deco who did the Speed test using Bellerin and a 40s overall player and both ran the length of the pitch in 14seconds approx I think Bellerin was something like 14.2 and the 40s was 14.4. Not even noticeable.
I can guarantee that a player with Messi's stats height and weight would feel different to Messi himself but the same as a similar player with 40s for stats.
The only time speed and agility is somewhat noticeable is in Exhibition matches