If you wrote that scene as part of a movie script, no one would buy it!
You mean in 10 mins, in the presence of museum goers, with guards all over the place, they entered the Louvre, started cutting out glass cases with loud metal chainsaws, bag the jewelry, threw their equipment on the floor, run outside, get on motorcylces AND SIMPLY DISAPPEARED/ESCAPED? WTF?!!

What about all the high-tech surveillance equipment? Did they all malfunction at the same time?
..and they did all that shit without waving a gun or any kind of weapon? Hell NOOOOO