they just showed a 4.25 vs 4.31 that was a good step and a halfand if they were in a footrace down the sideline that 0.6 difference would by SMOKE really the 40 is only applicable to DB and WR/TEand yeah you can try to equalize speed by jamming a dude up, but thats only good for 5 ydsafter that and if dude gets outside your hips,he's ghostand if you try to play that 10yds cushion then that opens up all other cans of worms