It helps that Bournemouth were on the back foot, especially when down to 10 men.
I know it's harsh to only have 2 days rest but can Wenger really say he utilised the squad fully. The Ox on bench for both games for example, or Elneny not playing 90 on Sunday despite it being his last game before ACON.
On a positive note Perez has been a pleasant surprise this season, I think he would be well worth a run in the side.