I'm European, never played a GoW before, but has this new one pre-ordered. Know alot of people in the same situation.
I'm also pretty certain that Kratos is alot more recognized that Nathan Drake, but that's just assumption :D
There's also alot more PS4's sold now when GoW releases, than when UC4 released :)
Uncharted is a bigger series than God of War. Therefore, by default, Nathan Drake is more popular. This may be the highest selling God of War game, but it has a way to go before reaching Uncharted status (let alone topping it).