My question is -are the drawings done on the same scale ?
The Americans look smaller when they should be bigger, perhaps they evolved from smaller primates comparatively ?

The trend in the Europeans is a more accurate  representation. From apes to upright bi-pedals , the  changes took place in several gradual stages before men are bent again , this time towards the rectangular screen. If the trend continues , what would become of us ? Reverting into the original ape state ? Then the cycle of evolution will have come a full circle and be complete.

Japan is already the undisputed robot powerhouse. The logical next step is robots in every aspect of life.  We wont be able to tell a real Jap from the humanoid with human like  intelligience.