Because it came up only as a solution to all the wingers being unavailable or used in other positions? Only available to play in attack winger in Berna was so useless in wide role he was moved to AMC, and guess what, he was useless there too (besides marking Brozo).
If 4-3-1-2 is going to become our main formation, it means we will quite unlikely fully start benching healthy Douglas Costa for Ramsey (if he stays healthy), because we know Berna cant really compete with either if they healthy/can play often.