I will say again, these formations may be nice for offering a variety of gameplay styles in the offline game, but go online with any of these formations which isn't basically a long ball (highly attacking, very deep defense) formation, and you will pay a very steep price.
The exception to this rule is his first Barca formation (the latter one leaks through-balls like hell), but this can be used only with teams with ultra high grade CMFs and CB's and full backs. Even then, support needs to pushed up to '10'.
I know, because online is shit, it's always been shit and always will be shit!
Online in every single football game ever, every mode has always had flaws, especially ranked matches.
Online is about getting people addicted, nothing more. Its designed for the everyday person, i designed to be as basic and open as possible so anyone can just go online and just play.
its designed also for the over-competitive insecure keen 'gamers' who spend too much time playing and live their lives being top of a meaningless leader-board.
It will never be the height of realism which you look for.