i think that this is just more of a sensory ability Aptom has gained to gague an opponents inner strength / fighting ability ... kind of useful for combat or if he's considering absorbing them... i dont get why he would say this in vol.29 if he didnt have the ability to do so ..here... panel 4 http://www.japan-legend.com/guyver_advocacy/29_-_chapters_for_next_volume/1207/12 saying he has only encounterd 'one Zoalord more powerful' indicates he has read more than just Archanfel