This is exactly what West Ham are doing, with possession of the ball for the entire 25% they lead 2-0, I doubt that Arsenal will be able to win back to a draw, but so far 75 minutes and with such pressure they can probably do it, the main thing is to score one goal, and there on the psychological pressure will be able to score a second one
Such teams that remain compact in the back after scoring early are usually hard to penetrate. Arsenal will have to do something extraordinary, maybe pull off a foul in the oppositions box because the forwards don't seem to find enough spaces right now
The way I see it, they are going to drop points tonight and Liverpool will remain at the top for now.