alt Hacker NewsEg the `m` is much different: it has the wonderful short middle descender, taken from Ubuntu Mono.
Your comparison says the `m` is 28% different. It's completely different. I don't know what the 28% is supposed to represent (yes, the difference in the area taken, but that's meaningless).
It's not completely different. Look at other fonts (e.g. comic sans) to see what "completely" means. Norwand is a little wider and the middle line is shorter. 28% seems a fairly accurate measurement. It's almost one third different for just the middle descender.