Though I've never played Ocarina of Time, I have a hunch that Twilight Princess will surpass it both Graphically, Gameplay-wise, and in simple every other way possible.
The Earth Temple in Wind Waker is AWESOME (but I say that because I like Medli ^___^), but I absolutely despise the Wind Temple. Don't ask why, but I don't really like Makar... he's just.... bleh! As for the bosses, the last two are pretty tough (Ganon's Puppet and Ganon himself) while the other ones are pretty easy too, I like how they implemented the use of the special item you find into the battle. I found that out from a friend when I was playing a demo against the first boss (which is one of my favorite bosses in the game).
As for enemy stats, Rath, I simply don't bother myself with them. So long as I can defeat the enemy, their stats mean little to me. And side quests... okay, you probably do need a strategy guide for that. Hehe. ^^;