Ok so i love this game! ( had to let u kno lol )

what i wanted to know was, on the 'TIP' bit of the game, just before u play (CAMPAIGN MODE) it says share ur expensizes (s.p) i know what that means but then when u play one will have the good gun ( whos buying the actull guns ) and the other dude will have the 1st gun.. and when u swap in - game, u get that when you click on "weapons" but u dont get it in-game, so u gota wait for a ' mid shopping' thing half way through the mission to select the better gun. or am i wrong?

P.S. Soz, i've only just started today.