That's primarily because KD made a killing on Kickstarter and was able to upgrade. I'd argue as to "aren't as nice looking" too, as most of the comparison images are favorable to the plastics. Additionally, the plastic shift allowed for a lot of extra bits to be added in, which comes in handy in a game where equipment is important...or for those of us who have an absurd desire to convert
The dwarfs actually came out rather well in AoS, from what I can see. Just flicking through the scrolls, I don't see a lot of "I'd never use these anymore" units, and there's a fair bit of synergy between unit types.
The measuring thing is a bit weird, but ends up not mattering once you get into the thick of things from what I can tell.
Also, aren't dwarfs going to look extra stunty on 32mm bases?