Saying Salah has no physicality doesn't exactly lend your opinion a lot of weight (pun very much intended)
But it's true anyway. Salah has may be 10 tackles since he arrived in Liverpool. He plays bodyless. He doesn't even hurry players like Bobby. Just compare both if you don't believe me.
And end product? He was involved in all three goals as has been pointed out. In fact they were perfect examples of what he could bring - counter pressing for Gini's goal, and a quick and direct through ball for Bobby to set up Salah.
Naby looked better but still made mistakes, looked hesistant, no tackles, looking lost at times. This was just another step in the right direction. But again: For 60 Mio. € you just expect more and quicker. I hope Keita will develop into an endproduct within the next 2 weeks, given game experiences and some good moments. Could happen, should happen, hopefully happens.