To be painfully honest, Toriyama's artwork is awful in my opinion. Aside from his characters being horribly deformed, too many of them share the same features in appearance: We've got the mean-looking square shaped eyes (Vegeta, Magus, every villain in DBZ, etc.) and the oval shaped ones (right many of his female characters and some of the protagonist males); the widow's peak and the large curly tufts that spike at the ends; the pointy nose and the ones in which the nostrils are apparent (which is a rarity, and that's a bad thing). Vegeta's face indeed looks much like Magus' face, to me, because both faces share many of those facial palettes. It seems as if he simply mixes and matches these features when creating his characters in right many cases, so it's a little senseless to argue that the proposed similarities between Toriyama's designs are unfounded when so many people are noticing them.
As for Magus himself, I'm quite intrigued by his character and personality. Design and appearance, not so much.
