interesting as I also thought the same as you describe, but the guy at OTR replies this...

"you will not "feel" on teeth extra, but if you take it about 3 teeth more, you will have a much better acceleration. The bike feel much more powerfull in every rpm.

Very important: You will NOT have a reduced high speed! This indicates that this is the correct gear ratio for the bike - the stock ratio is only because of the emission rules and makes no sense in a technical way!"

Confused now, may try the 46 and see what happens.