and there's realm above those 'millions status/level', on that realm, only being with same realm can injure them, even if you throw boulders at them, they will feel nothing, but if someone still under that realm, they can still get injured by normal means (tho probably just bruised for higher stat people). Auron already giving the hint in this chapter, he said he already break the limit, it means he got a chance step on that realm, since Auron actually 'level max'....