Good question, Bowen has been around for 4 years including a bit part season in the EPL, that gives him some experience but has also shown his limitations, has he ever been on anyone's radar as a top six player? Has he ever even got close to an international squad?
Bergwijn is a one club lad and the Eredivisie apart from Ajax is probably not even Championship level, that gives him limited experience but also European football, he's attracted interest from many big club and has played 21 junior international and now has 9 senior caps
So on world wide standing and experience wise Bergwijn is well ahead.
To call Bowen or Bergwijn a forward and is a bit misleading, neither are CF's both are wide men who like to cut in and both score a few goals ... an inside right/left they would have been called in the old days.
For me Bergwijn is two steps up, but I'm obviously biased ... let's see how they get on.