The disparity between the JPN and USA markets for PSX downloadable games is like the disparity in child-appropriateness between "Color a Dinosaur" and "Cho Aniki."
The Japanese PSN Store has 220+ PSX titles for download, including MGS, RE1, RE2, Einhander, Brave Fencer Musashi, Xenogears, and - well, 216+ more.
The USA PSN Store has 24 games, including "Coolboarders," "Syphon Filter," and "2Xtreme." (To be fair, they did just add Street Fighter Alpha, and they also have Wild Arms and Castlevania SOTN).
But 220+ vs 24.
But the USA store comes with that sneaking suspicion that either SCEA forgot the PSX exists, or their conversion team is too busy building a bigger and better bong to, you know, work on stuff.
So the VC has been hit or miss - and I'm, frankly, not into WiiWare so much as a concept (too much shovelware to pare through to identify the worthwhile games - and no demos is a big drawback for me). But its hits are huge. I'm purchased between 8 and 12 (I think) VC titles. I have 10 PSX games on my PS3 - sure, but 7 of them are Japanese.
Ain't no comparison; the amount of disappointment on my end is enormous and everlasting.
Unless you wanna talk storage. You got me there.