These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The cover for the second features a gleeful Katie Power chasing after a frantic, sweating Bill while shouting "Pony!"
In the issue itself, she offers Bill a carrot... which he reluctantly accepts.
Then, when Thor is de-aged, so is he, and he becomes the most adorable little horse-creature ever. Which Thor proceeds to ride on.
As they approach their normal ages, Thor and Bill become teenagers. Bill ends up with an afro and braces.
Expy: To Captain America. Compare Erskine's super-soldier program and the Korbinite effort to create an ultimate warrior and the parallels are quite strong, although the tech levels result in a far different scale of super-humanity.