Im not surprised to see Arsenal lose.The way i see it,they're gearing up for a full fledged assault on the CL and the league.In a way,losing to Manutd benefits them.If Manutd keep on winning,there will be occasaions where they'd be playing,and Arsenal will have off days.This would mean that with the 5 point gap that Arsenal already have,they'd be able to capitalise on Utd's schedule even more.The fact that Arsenal have never won the CL,and the fact that they are up against a European giant means that they can devote their energies to the CL too.I know losing 4-0 sucks big time,that too to Manutd,but i wouldnt be too dissapointed if i was an Arsenal fan.Its a win-win situation for them IMO.Manutd are playing in 3 competitions now.They will knock Lyon aside most probably,and then advance further.Fuck the FA cup.Arsenal can focus on the two main trophies and leave Manutd huffing and puffing because of their fixtures.