Silvia is actually great. It's the whole game world is poorly designed around the pair, the bosses are PISS WEAK AND UNEXCTING (not to mention their damage patterns don't make sense) while the regular enemy hordes and minibosses are harder than the bosses, and the music is boring.
If you complete VJ1 on adult, you immediately see how VJ2 is broken.
Oh, and the GC version was rushed and unoptimized so the PS2 version could be the "base" platform, shown in unoptimized framerates and loading times. Capcom can go climb a tree of cocks.