Sent.
I was going to do comments but I was just kind of repeating myself and I didn't want to be judged for going a certain way, so I didn't really include anything other than my winners.
For the songs: There were plenty of accurate choices, though I mostly just went with the one who had the MOST accurate choices. Like if I agreed that it was their best song, then that'd push you ahead. If nobody got a song I agreed was their best, I'd bump them up if it was among their best. All matches were significantly close.
For the performances: Ch, this was easy. For each one, someone pretty much got demolished in terms of entertainment or vocals.