I have a Beretta/Stoeger Cougar and do think that the recoil is much milder compared to others in that class.
I think it may be more $$ to make and a bit more bulky which doesn't go well with cheap, small, light which is the trend now. Not sure it makes sense once you get too small as the recoil impulse really isn't there unless you're shooting competition and $$ matters less.
All that said, I think the Cougar is a great gun and if it hadn't come out during the AWB (thanks bill) with its own magazine it could have done a lot better than it did.