Maybe Harry Kane can even score more goals than Lewandowski in Bayern Munich but that's not a good reason for us to say Kane and Lewandowski are both in the same level because Lewandowski was in Bayern Munich. At the same time, they had different players and playmakers while Kane was in Bayern Munich while whole team focused on this player. People are all interested to see him score goals as he is the most important finisher in Bayern Munich.
Actually they are both very good footballers with very good style. However, I think Kane is more successful than Lewandowski, but I also think it's not fair to compare them because Kane is 5 years younger than Lewandowski and also Kane has been the top scorer and assists scorer in the Premier League for years for Tottenham, which I think is a mediocre team, while Lewandowski has won easy titles for Bayern Munich, which I think is the king of the Bundesliga. Kane had a more difficult career in the past. Now he might be having the easiest days of his life at Bayern Munich. On the other hand, there is no doubt that Bayern Munich made a very good choice by signing him.
They are both extraordinary athletes and it is not easy to differentiate them because they are in different years and circumstances. We will have to wait and see how Kane performs in the years to come in Bayern.
Kane could be scoring goals in the Bundesliga much easier when he was in Tottenham, a lesser club in the EPL. Playing in a big club like Bayern or City is likewise an opportunity because they have the much needed funding to hire the leading athletes.
Lewandowski was with Dortmund before joining Bayern. And he was already extraordinary but at his best when in Bayern. Erling was with Dortmund and in the Bundesliga, but he is now becoming better with City and in EPL.