Lewandowski currently has a 1.19 goal to game ratio so far this season. That's a higher ratio than any single season of Cristiano Ronaldo (1.13 in 2015) or Luis Suarez (1.13
in 2016).
The record breaking seasons of Gerd Muller (1.35

in 1973) and Lionel Messi (1.22 in 2012) seem to be the only European goal tallies to beat Lewandowski out.
Rather impressive. He'll feel a bit hard done with the CL being a one legged tournament this season. He might've hit 60 this season had he had more games to play.