With a description like that, you'd think he was a 6th round pick.
His 40 time represents his maximum potential for speed. Shouldn't that still be reflected regardless how he looks on the field? Wouldn't a lower awareness and play recognition give you the same basic result? Yea he probably doesn't hit the gap as fast as he could, but I've seen clips where he chases down players and uses every bit of that 4.47 speed.
We can't guess how he will play in the NFL, but we can go by the data provided, like his 40 time.
[edit] All new Eagles numbers came in today.
M Kendricks 95
N Foles 9
M McNutt 83
D Kelly 67
B Washington 78
C Polk 32
T Edwards 11
S Vallos 68
M Fountain 74 (he actually shares 78 now with Washington, so I gave him one of the few numbers available that don't interfere with retired numbers or are out of position numbers)