it took way to long for the LA police to stop them way to long

You gotta know when to fold'em! They had the pure advantage here. 5 FA machine guns AK47's + M16A2's I think I saw (best of both words) with 3,000 rds of FMJ ammo. Body armor, 100 Rd drums!!! and a piss poor amateur strategy. What they needed was a mastermind that could work up a proper smash+grab+evade plan. If those guys were ex military all of those police would be KIA.
Some common sense would reveal that the police would not be ready for the robbers advantage in firepower and have 'standard' weapons and tactics for dealing with a bank robbery, initially. Once it hit the fan they needed to be precise & brutal to get away as quickly as possible because once the police reinforce with SWAT, SWAT = Sharpshooters snipers = its over!
This could have been a bloodbath for those police if they were dealing with a smarter, better organized and motivated set of criminals.

*** The Police!!! They already have 2 much "power" with what they have. I say they are the criminals.

Very interesting. Funny how bad shots they were considering their interest in bodyamor and steelpenetrating bullets, not mentioning their choice after discovering no larger sum of money were at the bank. Guess it was just a couple of happy gunmen with the hang to specialimport of ammo and selftailered bodyarmor.