Nice list. I agree with all. Bret Hart could be a toss up with these matches vs. Piper, Bulldog, Yokozuna and others as honorable metnions. Taker has a handful of toss ups too. You can add:
Austin vs. Bret Hart WM 13
Rock vs. Hogan WM 18
Cena vs. HHH WM 22
Orton vs. HHH vs. Cena WM 24...