P!nk - Would win, without a doubt. No contest.
Rihanna - Final Two, is killed by P!nk.
Ke$ha - Comes in third but is stabbed by Rihanna.
Beyonce - Would have an alliance with Lady Gaga, then go Foxface once Gags is killed by Rihanna and Katy. Ultimately dies of chart starvation.
Katy - Killed by Ke$ha
Lady Gaga - Killed by the Rih/Katy alliance early on.
Nicki - Killed by Beyonce at the cornucopia.
Azealia Banks - Killed by everyone before the game even starts.
Xtina - Tries to run but is tomahawked by P!nk.
Britney - Cuts out her tracker and somehow lasts until the end, but is forgotten and ultimately left in the arena.