1/64 scale or anatomically correct 28mm. 1/72 armour does not look really wierd (apparently the Forces of Valour stuff is about 1/69 as well). Compared to GW guard they look thin, but bear in mind in real life GW guard would look like popeye and their weapons are about 1/35 scale.
They actually look fine, and are the same height as 28mm figs and just slimmer.