>>5943761compared to guyver III, he looks a bit small iirc, also the height boost sho gets while he's on the guyver armor is not that big, if this pic is to believe (i tried to find a size comparison pic, but it seems that my google fu skills are simply shit). the big proportions many people remember is from the ovas and anime, where he's quite bulky, and with the pass of the years, the mangaka made him a bit slender.
maybe they made him small so the upcoming guyver III will tower him, but then we have IIF, i'm not sure how tall she is in the manga, and also we have the fact that the figma line is really all over the place in scale and sizes, we have something decently sized as samus, and then we have manlets like tekkaman blade and evil, who are meant to be really really big