One view of the last fight...
He is beating up a bunch of heroes, and then they send their second wave in (which includes some powerhouses in their own right), and even then, he is still beating them up.
I'm not showing the MM fight, because Juggs already did.
So, he is still beating up some heroes, and then MM tries to mindrape him. Even then, it isn't working, and then Marvel comes in, and hits him with a bolt (which changes his secret word, to turn into Adam).
So, even after all that, they still only beat him through magic and trickery, not through force.
Also, there is another view of the ending in week 50, which I might post...
Week 50:
Killing two people right before the big showdown...
And now, all the heroes attack him (shows a better look at what Marvel did):
Seemingly punches out Power Girl, and then gets hit by the lightning (a giant hand catches him, and I don't know, but I have a strange thought that it's Atom Smasher...).
Here is Teth after he finds out he can't change (I feel sorry for him):
There!
I hope I spoiled it for everyone (although, if you haven't read it yet...).