Brentford isn't dominating the game at all. It is obviously Manchester City that is in the driving seat in this game from the first minute onwards. But this is still not some amateurish league, it is the Premier League and I would argue that per se any of the clubs playing in this league would also be able to score a goal against any team.
Brentford has less than 30% ball possession and it is the standard game, Manchester City has the ball and creates chances, but if they don't score early and their opponent gets a chance and scores with a little bit of luck, the clock starts running against them. But this will be a very long game for Brentford to defend the lead as Manchester City can increase the pressure with every minute passing by. It is often a question of power in reserve and Manchester City knows how to deplete it and then they attack with perfect timing.
Liverpool is of course hoping for Manchester City to drop points here as that would allow Liverpool to get away with their loss quite cheaply, but since there is still more than one half to be played, I think that City will still win it.