[Lauren]

Charley just faked her spite. She was a PR machine and everything she said had been worked through the cogs in her head to see how much air time she'd get.

Alexandra - on the contrary - is slightly real. Obviously she considers air time but largely she argues for the sake of the argument, rather than the after-affects.

For this reason I think Alex would win, cos she has more spite against Charley who doesn't really care so long as she can get drunk and stumble.