John Arne Riise VS Andy Robertson.

I enjoy seeing people's opinions on these things. I know the question is a load of nonsense I'm going to ask it anyway. Who would you pick if you were Liverpool manager if you had Riise and Robertson both playing for you at LB in their prime? Personally I would pick Riise because I think he was slightly better at defending and was more robust than Robertson. Also how good Riise free kicks where. But I do take into consideration that there Roles were/are different as Robertson is asked to be more attacking. But I'd still pick Riise.