>>8429301>>8429284Alright, did some measurements.
Siege is slightly taller (15.7cm vs 15.5cm), but with a shorter torso (5.5cm vs 5.6cm). Crotchwise, Siege's is way chunkier (2.1cm vs 1.5cm) - this is excluding the 0.3cm gap between the crotch and midriff . As for the heads, both of them are 1.5cm x 1.4cm - it's just that ER has a wider chest and narrower face.
*Height measured from sole to top of head for consistency. Torso length measured from bottom of crotch to shoulders.