After watching virtually none of the previous Ep's, I can only say for this one but it was clear that Anthony sang much better than Casey,
She essentially shot herself in the foot with a flat unclear rendition of Evanescence. There was no clarity. I'm fairly sure it wasnt the mix since being someone who actually can and does mix I know what can be done and what to listen for.
Anthony was much better but fell away towards the end of the Craig David song, but Casey also sang with no emotion during her opening number, she couldnt get the body in the top end of her voice which was disappointing.
Anthony should win if we're judging off this show alone, however since women vote for this thing more than men we could end up with a female winner, and also the fact she is a larger girl does help with positive role models for young women.
Anthony does look like another one of those pop-boys (N-Sync etc) except he can sing classical and the like, but still looks, he's quite plain. Also this is pop music so people who like this trash are idiots and don't what good music is anyway.
But on vocal performance Anthony should take it easily.