Barca while undoubtedly the best team currently will not have a much easier time in the EPL. This is the most physical league, i think a lot of their players will get injuries and they'll lose rhythm. Though they'll still have a chance to end out on top they wouldnt be able to have their way against teams all the time. I see smaller teams being rough, aggressive and putting the bus in front of goal.

That said, January will be a crucial month because December has so many missed games. Whomever ends up on top would probably lead the race.