Lukaku scored 113 goals in 252 appearances in the Premier League, so either the PL is poor, or he is a top performer.Because in Italy/Germany/Spain, the top clubs are sensational. Juventus, Bayern, Real Madrid, Barcelona would give City/Liverpool a beating nine times out of ten.
So when you're Lukaku in a second-tier side like Inter but still miles above the rest of the league in terms of standards, you score goals.
Sandro scored goals in Spain, Kean scored goals in Italy - because the gulf in class between the top two or three teams and the rest is akin to the SPL traditionally with Celtic/Rangers.
Sandro hasn’t scored goals since returning to Spain. he was a one season wonder, and when Kean has started for us, he has scored.
There are plenty of players who have gone from the PL to other leagues and failed. Ramsey, Coutinho, Lookman etc.
It’s very difficult to compare leagues other than by international competition. The PL is not miles ahead of other leagues, even when the lesser teams play each other in the Europa League.
I just don’t buy the argument that they are miles worse. They do not have the depth, but they are not as bad as is made out. You’re fooling yourself if you think it’s the case.