But what if their face was shaped like an ass or pair of tittaes. Which would you choose?

I'd choose running for the hills.

I think it's mostly my OCD that prevents me from appreciating a good bum. All i can think of is, "eww, that's where poo comes from and where they sit on public toilet seats" XD

Butt. And that's not just about size. Ideally it's a combination of both size and shape, but shape is more important to me.
Last girl I was with had a small butt, but it was athletic and shapely. She had a flat chest and was self-conscious about it, going so far as to hide them, even though I couldn't care less.
I will say, I have gone out with a girl that had double d's and that was great too. But I'm an ass-man for sure.

Porn life isn't quite the same as real life.  Apparently.

Went into the topic expecting an OP making arguments on why one is better.
Turned out to be the title of a game.

Japan, oh you xD

Ass is better than boobs anyday, once upon a time I used to be ashamed of saying it because I thought I was the only one, when I was really young. I always had an affinity for sexy asses xD

Darn thread got derailed.  For shame. 

I don't think people were interested in discussing this game but rather the subject matter xD

Butts !!!
Boobs are an inconvenience for a lot a females,well yeah mostly the bigger sizes.

Hmmmmmm, well a perfect ass vs a perfect set of boobs...the ass wins everytime IMO. Plus you can grab your girl's ass in public without it looking weird, try that with her boobs lol