It's the newest thing I'm seeing here. Everyone is doing it!
We assume characters just lose their main defense or powerups in threads because we fail to properly explain how a low feat has any correlation with the characters. Mind you with the lasso she could do it, but Beta does it on his own instead.
And quite honestly, I don't think Beta Ray Bill can beat Wonder Woman without Stormbreaker's enchantment. With it he can survive in the sun. Without it, he probably can't. Wonder Woman throws a sun at him.