This is not a combined character review, or a character review, at all, it's just a little thing where I like to point out about things, like George and Fred. :-)
Anyway, it seems to me that George was always the - ahem - "nicer" one. Maybe because he's talked the most of the two so far (at least in the first two books).
It seemed and still seems weird to me; George always being the one to talk more; he seems to have more of a personality - "personality" meaning we "know" him better than Fred.
Maybe we'll learn and "see" more of Fred in the future. I hope so, since even twins can be completely different.