IMO I think she's lying about not liking it. Fucking for 1.5 hours would insinuate that she must have liked it enough to keep going. 1.5 hours is different than 20 minutes.
As for every girl liking it, I really have no idea. I CAN tell you that if you think normal amateur women take giant dicks as easy as girls in porn you are entirely mistaken.
OP I've actually had a similar experience, My GF when we first started dating told me about a guy she was dating (twice removed) who had a "huge" dick...a "too big" dick. She said they hooked up a couple times but the sex was bad because of the size of his dick an his inability to use it. Like a bull in a china shop kinda thing. She told me it was a waste of a dick, and that along with him being a complete fucking moron made it easy to end the situation.
I do not have a huge dick, and I'm sure most people wouldn't even call it big compared to some of the snakes walking around these days. However I look at it this way. I've never had a girl been able to deepthroat my cock without choking, and I've had a few women turn me down on anal both before and during because my dick was too big for them to take. I have gotten complements on not only the size but the firmness of my dick(that to me was the biggest surprise who knew people my age couldn't get rock hard)...
So I look at a man's cock situation this way. If it's big enough to have the issues I spoke of above, than the rest is up to you. I know for a fact that I am a good fuck not because of the ginormity of my dick but because of the way I use it. I personally think and have had experiences with girls appreciating that experience more than just having a giant dick jamming inside them.
And remember the majority of porn is made for men, the idea of annihilating a girls pussy, ass, and throat is more for men than women.