You can see another example with your favourite font. It took me more time to select the font and set the font size in the stock reader than to do all the rest...
Kerning still worse, you see the first two sentences Hav e and m y wi fe. See the word leaving in the third line.
And also KOReader fits more words per line. That's why after the first paragraphs the text is not the same in both screenshots.
