The plot (what there was of it) was trying to go in multiple directions at the same time. The comedy made use of hackneyed and offensive stereotypes (barbarous Mongolians, dumb blacks) or smirky in-jokes about the girls, who have a whopping one film history together, which is not nearly enough for self-referential humor.
The action scenes were horrible distortions of reality. I mean, I can suspend disbelief for most movies, but villains who can fly simply by wearing a dress with big sleeves and a full skirt, people dodging bullets by flipping away from them, a full-speed car crash (including ejection from the crash) with only a couple of scrapes to show for it, and girls jump-kicking guys who mass twice what they do to project them 5 to 10 meters away and then landing in the exact same spot they jumped from is a little too much. Being bludgeoned by such blatant unreality doesn't produce suspense or even "kewlnis", it produces laughter.
If this movie had for one second taken itself even a little bit seriously, it would have been unwatchable. The only thing that made it tolerable was that everyone involved treated the movie as one big joke. The only real humor of the movie -as opposed to a gag or the hilariously bad special effects- was the dialog sequence with Matt LeBlanc and John Cleese, where a mistaken premise by Cleese makes LeBlanc's "innocent" remarks have a double meaning. I suspect that dialog was written by Cleese as it seems to have some of the hallmarks of his style.
If you want to see a stupid "action" movie, with indestructible heroines and yet more effects-enhanced extreme sports crap thrown in to appeal to those who actually care, this is the movie for you. If you want real humor, a plot, excitement, thrills, or anything that will engage more brain cells than necessary to make your eyes track movement, see something else. It's a slightly entertaining movie that misses getting a vote of two only by virtue of its not pretending to be more than it is; dumb entertainment. 3/10