A 4" vs a 3.58" stroke is a difference in piston speed at 7500 rpm of 8.75ft/s
Is that really enough to matter? peak speeds are still under 100 ft/s. With a 4" bore, the mass flow rate can be kept in the subsonic range with typical available valve sizes.
Prostock guys go over 100ft/s and still make massive power. I don't think the 4" bore is as much a crutch as thick rings, tall pistons/tall decks and crappy heads and combustion chambers.