It's good! It actually does sound really good with that production (though I still think it is better with the raw Too Fast production), but this one definitely rocks really hard too! Great cover! Except I don't think the vocals are "superior" at all! They are probably the only thing that lets it down a little bit. His vocals aren't bad but certainly not superior to Vince's! Vince has an awesome sounding voice (even if he can't sing live) and much more suitable to the song than Jericho who sounds too gritty and thrashy for a Hollywood rock & roll song.
You say that as if its a bad thing There's nothing wrong with singers not having ballsy voices! I'd much rather hear a sleazy sounding snarl with stacks of attitude like Vince Neil than a tough manly man voice haha! I don't like tough manly man voices, gimme a flamboyant pretty boy glam voice anyday!
Jericho doesn't sound gruff or anything though, he has a good high register (well on the first album anyway), he just has more substance and power to his voice which I like. The original sounds alot thinner, which is why I like the cover more.
Nothing wrong with flamboyant singer as long as he can actually sing I spose.