CQB pro VS A5

so now what im comparing is the Milsig Cqb pro and the Tippmann A5 . my local field owner is stating to me and all my friends that come to play here that Tippmann is superior in every way compared to a milsig, she even said that the A5 was better than mine ( i wanted to smack her so hard lol ). But the problem is that mechanicly the A5 is similar to the milsig, it even accepts barrels, stocks, body kits etc.... so i tried to tell her that its basicly the same thing underneath ( minus the mag fed option ), but she kept going on that tippmann would never allow such a thing to happen blah blah blah, made me feel bitter about the field since i have been playing there for 3 years and she is so ignorant. I have tried a A5 and own a milsig, i love the a5 but the milsig just seems superior built, and less plastic. im actually thinking about getting a a5 as a back up for when ever or for my gf to use when we go out to play. but tell me, is there any real connection between milsig and tippmann ?