Nul is an enigma. There was no proof that he could amplify the Hulk's body the same way that Bruce can. Death Sentry has not proven to me that he is any greater than the regular version of Sentry. I understand that he put a hurting on Thor, but as the Sentry he showed similar power when he toyed with Terrax, and broke a nearly unbreakable cosmic weapon like a twig, while grinning. It should also be noted, that he crushed Terrax's hand with little to no effort as well.
On the strength of feats, Team one takes this.