I doubt exclusitivity would've helped Castlevania or Enslaved by much.

I never supported the idea of exclusivity but I honestly think that Enslaved would have benefited from being an exclusive title.  Even witht the exact same content and absolutely no changes.  And, even with my preference for the 360, I think being a PS3 exclusive would have been the way to go.

One thing that shocked me before, and is somewhat of an X-Factor:  While 360 gamers weren't as receptive to this game long before its launch (no multi-player, online, etc.), there was a surprising amount of hate coming from the Playstation camp.  Some people who were fans of Uncharted felt threatened by this game.  For the record, it's not as good as Uncharted, graphically, technically, or gameplay wise.  But early on, fans of Nathan Drake were knocking Enslaved for it's graphics, gameplay, and platforming (calling it a simplified version of Uncharted's platforming when Uncharted's platforming is actually a simplified version of Tomb Raider Legend's platforming).  But, I digest. 

Yes.  I said digest.

Enslaved looked pretty fun.

@ OP

You could always ask it like this "Would Madden do better if it was exclusive?" Answer: No.

they are two completely different games. Madden has been an established ip for maybe 2-3 generations. Enslaved is a new IP. And imo new IPs will get more attention if they are exclusive thus get more sales. Example-Heavy Rain Do you think it would have gotten the sales it did if it was multiplatform?

No, it wouldn't the games are just not good (despite reviews and what the internetz thinks).

Madden and FIFA can't ever be exclusives otherwise EA would lose licensing rights. So well, it's kind of different

Your post sounds like a fallacy. I wish I knew exactly which one it is.

Sure why not?

For me this was true. I love castlevania and butis not a castlevania game.

I am very much interested in enslaved but there have been so many high profile games released, I knew i would just put in my huge backlog. Shame.

No!

God, I hate it when people think this because it's just one of the dumbest things imagineable.  A smaller userbase doesn't mean better sells.  Even if they were exclusive that doesn't mean they would be first party and that means Sony or Microsoft would not have advertised them like a first party exclusive.

The only people that care are the people that constantly browse game forums and news blogs and those people represent an incredibly minor piece of the userbase.