User blog comment:Lambda1/Character tiering/@comment-3481504-20151009135233/@comment-168.169.25.92-20151010023729

Leprechauns weren't even that impressive. One claimed he was stronger than archangels. But when he fought Sam his strength wasn't even as high as a regular angel. This proves that Leprechauns aren't the "Seraphs" of fairies. Even a severely weakened regular angel implied he could kill the wicked witch. All you would have to do to Oberon is put him in the microwave, and light his ass up.

No dude Castiel was basically human at that time. Cherubs are a lower order of angels. Castiel in a weakened grace was still able to telekinetically subdue one.