I don't know what to name this but...

I don't know about you guys but this just happened I was looking at crossfires homepage and I never seen the weapon tab on their so i decided to check it out...and according too that the Mp7 is stronger then the mp5 mp5 adv kriss p90 etc etc...and also the M4a1 was lacking in powered when compared to the ak but also compared to other rifles it looked weak..so my question is...Is that tap up to date? or anywhere near Legit? lol keep in mind they claim that the mp5 is better then the mp5 adv...somehow the word adv means better no?