How many times does LAX go into holding or a divert operation? Or a ramp closed operation? Basically never. MIA? All the time.
The downside is West Coast flying, in an industry that has the majority of it's flying of the East Coast, has bigger issues with the body clock.
Years ago a new guy was saying "guys are always complaining about the LAX flying but I've looked and they don't look that bad." I said "look at that flying and put it in body clock time." "Oh...." East Coast AM departures are ugly for West Coast guys.