Looking at the stats, a City 3pm kick off would be absolutely regulation, and finish at 4.45 on the dot.
Villa would still be playing after 5pm.
Even with the timer, do you think people would accept that kind of difference?
It's also mostly not down to time wasting. City have the ball in play more because we're constantly stringing a couple of dozen passes together where the opposition can't get close to them. Lots of teams play more direct, or balance each other out, so can't hang on to the ball as much. You get more tackling, more fouls, and the ball going out of play much more often.