Link/Ganondorf is a pretty weak rivalry I think. It's a much better one than Crono/Lavos, but again, David and Goliath type matchups don't really make for good rivalries, and it's a different Link almost every time the two fight. It doesn't really pass the eye test for what makes a good rivalry for me, like it's not really "personal" between the two of them, it's just how it goes. It's a rivalry, but it's kind of a lame one.