It think it may have to do with localization more than anything. Because both examples are German, at least I think, I really don't have issues with the size of the font and my game is the American release. (Then again I play the game on a 60" TV)
And the issue here is legibility, not readability. Readability covers both legibility and the ability to comprehend the document. Because if you can identify most letter it is readable because you can usually identify what the word is suppose to be the surrounding text. Though extreme cases of illegibility lead to things not being readable. The "e" in this case does suffer from illegibility issues though you can tell by the shape it is suppose to be an "e" though a boost in size would defiantly help.







