Honestly I am unsure how to respond to this as lots of things could be taken into consideration.
Out of the men I have slept with the three that stand out the most as the best lovers were intact. Now was it great because they were intact or because they had talent I can not say. I will say this though, I seemed to get better G-Spot stimulation from the men that were intact...again talent or foreskin I can not say.
Now as to the sex feeling different, it actually did. It seemed to last a little longer, they seemed able to hit all the right spots, and it felt wetter for lack of a better term (never had to use lube with them) Also the friction seemed a little different.
lol I pretty sure that others are reading this wondering exactly what the hell I am trying to say..yeah I am rambling.