I don’t think it’s really a question of being worthy. I mean, plenty of the Zelda villains are worthy of being villains, like Ghirahim, Zant, and others. Now, if you’re asking if he compares to Ganondorf at all, then the answer is absolutely not.
Vaati was cool and all, but I’m glad that he stayed strictly as a Four Swords and Minish Cap villain. Because it would’ve been weird if he had been in any other games.