True. I'm very skeptical about Germany league now. Way too many players look good there. Just look at Jovic, Dembele, Werner and Paco etc.
Germany league is made for offensive players look good
Kagawa and Mkhitaryan as well. Shinji produced 13 goals and 12 assists when United bought him. Mkhitaryan on 11G+20A.
Now I'm sure Sancho is a much better player than these two so I don't really doubt he'll be a bigger success. But he might not produce Salah type of numbers in PL like he's done in Germany, but let's see.