So, I have City-supporting family on both sides of the pond (Mom's family vs. Dad's family), and so the tribalism aspect might be a little different for me.
As for a Liverpool title creating excuses for our win, I could not give less of a fuck. I would give Liverpool every excuse on earth for a 1% greater chance of winning this game. It has been said that to be English is to prefer your enemy's failure to your own success, and I guess I'm a red-blooded American by that standard, the only thing I give a shit about is winning. (With a side of Woolwich schadenfreude please). And I think Liverpool winning the title gives us that marginally better chance psychologically.
I do think Will hit the nail on the head about what City's title means, but like, doesn't that viscerally disgust you? And can't you see how that hurts the game we all love? I dunno, I get a bit Jon Snow about this, that our petty human squabbles are meaningless in the face of the real war against the zombie hoards of undead.
Just one man's take on it.