Talk:The Flash VS Quicksilver/@comment-27065392-20160505161332/@comment-24106025-20160505164928

I'll see if this helps:


 * Both are cursed beings (Nightmare being a body possessed by the demon Inferno and Guts' brand attracts demons nonstop)


 * Both wield enormous swords, the episode's main focus.


 * Both have claimed so many lives and devasted armies.

And both are tough to kill...though that is more opinion yet their actions do speak out the contrary.