Look at *differences* between words rather than at the words themselves?

[Koen G]

I would suggest that your attempt at counting depends very much upon the original glyph set: 
fachys ykal ar ataiin shol shory cthres y kor sholdy
is ch one glyph or two? What about iin? Etc.

Of course! EVA has been designed to be stroke-based, so it will dwell at the high end of the spectrum. Still the point remains that there is more variation in word length. The difference between "y" and "sholdy" is obvious even when "sh" is considered one glyph.