[ljacone]

I had always thought (and remember discussing this with Baltan II at some point) that the reason for the split between Ultra-Act and SH Figuarts was that the UAs were scaled to work with the vinyl Ultra Monsters.

Given that Bandai has moved away from that scale for the vinyl line (going to the 500/Spark Doll size which is smaller), there is no reason to make these figures scale with those earlier monsters. And in the manga (at least as of volume 1), our hero is not giant sized, but human sized.