With all respect to the OP, I don't even understand why the question is asked.
To me, it's always been clear; 400fps limit is 400fps limit, no matter what shoots it. Why would there be any kind of distinction between rifle, smg, pistol, aeg or propane or CO2?
Originally Posted by Brian McIlmoyle
Real life comparison,
GBBR- bang bang -- Giggle
AEG-- merrrzip merrzip -- meh