SOLDIER members have to be mentally strong before they can even get accepted into the force, and once they've made it, their minds and bodies get strengthened to truly superhuman levels with spirit energy and Jenova cells. This makes them impervious to damage that'd easily kill any regular person, and in the case of the elite First Class SOLDIERs, gives them strength, agility and reflexes that are basically unrivaled.

SeeD are teenagers who're taught that you should kill whoever you're told to, so that your boss gets some money from the client.


*votes SOLDIER*

Sure, there are some gifted fighters in SeeD, especially those who find an actual, moral cause to fight for. And in SOLDIER, there are plenty of warriors who lose to a ragtag assortment of fighters who're utterly dedicated to their journey to save the world. But overall, SOLDIER's easily a stronger, more disciplined and militarily superior force than SeeD.