Agree totally!! xd edos shouldn't count and neither should the power of the edo that someone might summon becuase although it's a jutsu you're using another person's power unlike a animal summon or kunai which can't do ninja techniques on their own
How in the World could Madara or Hashirama solo Kabuto or Orochimaru?
Neither one of them could solo either an Army of Legendary Ninja, or the 4 past Hokages, and note that they can only be defeated if sealed, Hashirama stands the best chance but him being merely human will be overpowered by Zombie Ninja