Probably. My gf would agree with that. When we started having sex, she thought i couldn't cum because it takes a considerable time for me to do it. She doesn't have the same problem, I think, because she get used to normal 'fast' guys, and in the middle of it, she stops, tired as hell, and asks 'why can't you cuuuuuuuuumm?? i made it 3 times already' - me: 'baby, we've been here for just 5 minutes or something' - she: 'you kiddin' me? you been there for like half an hour'... Sometimes I don't cum because she doesn't have energy to wait for me
So yes, I think it's true.