First of all I want to say that Ram209 did do a great job with these and I'm still enjoying them, as for that coop sitution you're having I haven't really played that way myself but as far as them working under normal conditions and gameplay circumstances they're fine IMO.
I'd most definatley go thru the in-game tutorials for the answer to your sitution its nothing found in the game manual so you'd more then likely find it in the games active in-game manual once again perhaps it details the differences when playing coop.
Holla Back ya'll