BVB left the Emirates with three points after a 2-1 win.
Wilshere told arsenal.com: ""It was a tough game. They are a good team and they have great players but we played well as well. We were unlucky at times, Santi [Cazorla] had a great chance and we had a couple of other chances . But then they hit us on the break and we got caught but we'll bounce back.
"They are efficient. Germans are always efficient, they've got great team shape and they have good individual players like we've seen here. They are a bit similar to us, they move the ball quickly."
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