Your speculation is uninformed lol, has nothing to do with "being built to strike in a different way", you either throw real punches or you swing wild haymakers
Cain is a very skilled wrestler, but a woefully mono-dimensional fighter beyond that, he would get KO'd fast by the monsters in Glory and probably not win more than a match in the ADCC, yet nobody at HW is even good enough to beat that one dimension (JDS could if he had great footwork though).
/shrug
That is a bogus dichotomy. It is not either you throw real or throw wild haymakers, there is tons of middle ground. Also, Cain is by no means one-dimensional.
I never get how people think they can make these assumptions that he would get KO'd fast. We have never seen him train specifically in kickboxing, so who can really say?