Later - more powerful - incarnations of Ultimo were pierced, hurt, knocked over, and staggered by IM and similarly-powered heroes. No-selling Thor makes no sense. It's either team-based PIS for Thor, or it was before the new car smell had worn off of Ultimo and he was still being gifted his grace period when any new character comes into being and appears way cooler than they turn out. Or, the likeliest scenario, it was decades ago and is just inconsistent writing.
Literally, in his most powerful incarnation, a bad IM knockoff gets through his outer armor and a D-list energy absorber drains him of a lot of power. It's irreconcilable with the Thor stuff, as is his entire history.
It's also how he's treated on the entirety of the forum. Nobody thinks he's a Thor-buster because everyone has enough sense to see what his portrayals suggest. The judges will do the same, and I would be an idiot to try to convince them otherwise. If you need proof, open a Thor v. Ultimo thread in the vs. forum. We both already know what everyone will say. Or, make it easier, Ultimo vs. a low herald level cosmic type. The responses would be the same.
srug
You can quote me on that Thor stuff if we fight. I won't be dragging the scan out, because it's basically unusable.