I thought Zelda 3 was considered one of the best games because it happened to be a top-selling game on the top-selling system of the time. Luck, man, luck!
Anyways. Runinruder's defense of Basted sounded pretty tongue-in-cheek to me, so it's silly to get so worked up about it... although I agree that Basted is actually very fun and playable, as far as "bad" games go.
Compare that to stuff like Brainlord (SNES) and Lagoon (SNES), which aren't fun at all. If you step outside of RPGs, then there's Mo Hawk and Headphone Jack (SNES), which is far worse than Turbo/PCE duds like Keith Courage and Legion.
For me, the SNES was a system of disappointments. Zelda 3 was OK, but I'd say Ys has more replay value. How can I say that? Easy -- I've actually replayed Ys.