Differences between j.MP and j.FP

I am taking about a diagonal jump, not a jump straight up. It seems there is little difference between these two moves other than j.MP doing less damage. Anyone notice any substantial differences here? They appear to be about the same speed as well.

Never tested , but if cr.LP contra cr.MP is any measure , then id say jumping HP has more active hit frames ( which is basically the only difference , besides range , of the forementioned example )

different noises. sorry i had to.

Longer hit stun, and I think longer block stun.