Just watched the Michael trailer and most of those characters were 3rd party characters. What everyone is failing to see is that Sony would have to pay royalties to have most of these characters in the game. Or did you think that all publishers would give the characters to them to use for nothing.
It's the reason why it took so long for Capcom vs tatsunoko to come to America and the reason why Shonen Jump Superstars and Ultimate stars never made it to America. Especially with the economy the way it is no one wants to do things for free anymore.
The problem is that all of Sony's characters aren’t memorable enough since we all seem to one not a Sony smash brothers clone but a Capcom vs Sony vs activison vs konami vs Square enix smash game which I believe is not financially viable.
The way you guys want it by the time all the royalties are paid off the developer who actually made the game wouldn't get enough to offset the development and marketing costs.
Here's a list of 1st party characters I would like to see in this game listed from most likely to least:
Character Series
Kratos God of War
Nathan Uncharted
Sackboy Little Big Planet
Jak Jak and Daxter
Ratchet Ratchet & Clank
Sly Cooper Sly Cooper
Dart The Legend of the Dragoon
Spike Ape Escape
Daniel Fortesque MediEvil
Rudy Wild Arms
Not sure if these are first party but
Nariko Heavenly Sword
The Wanderer Shadow of the Colossus
Max/Monica/Toan Dark Cloud