i think taht its all fair and that Radec isn't that hard you just have to time it and jump over his red light for the sniper rifle and he can't deal with melee well. kratos has soo many options for getting in on you but the real problem is you have to keep pressure on him and control his meter with grabs. i suggest dodge rolling when he comes at you then once behind, you grab him.
I mean it all depends on skill really. I've even seen a fat princess pwn. If you're good at dodge rolling attacks and keeping the upper hand on the enemy it doesn't really matter who you play as.
I realy hope alot of the characters change at the release. Because ive noticed that The beta is far unbalanced...
Not at all. I've heard and seen people win with all the characters.