Hard to say yet. Even the Galaxy S3 will probably be a huge surprise, whatever it packs given super huge expectations. The Nexus S was slightly better than the Galaxy S but more expensive, but the Galaxy Nexus wasn't better than the Galaxy S2. Too hard to tell at the moment.
Frankly, these days we can expect literally anything from Samsung so it's impossible to tell untill the official announcement day.
Frankly, these days we can expect literally anything from Samsung so it's impossible to tell untill the official announcement day.