http://bugs.winehq.org/show_bug.cgi?id=18349
--- Comment #7 from Michal Suchanek hramrach@centrum.cz 2009-05-06 04:35:33 --- Yes, I could try that.
However, I have explained in comment #3 that doing so is pointless in my view because the error lies elsewhere than with rendering of that font.
Indeed, running Notepad in Japanese locale and using System font results in this error (uppercase letters thin, lowercase thick) but using Kochi Gothic results in all letters being thin (and somewhat smaller).
If you have some insight into the problem that suggests the results of your proposed tests are still useful then stating why it is so would convince me to perform the tests. Also doing so might give the people reading this report more insight into that part of Wine resulting in more accurate future reports.