It seems everyone is under the impression that new BD doesn't have overheal. Even the Neopets beta news page says they haven't fixed it. Though I'm not sure what's going on (or if it was recently fixed), I can prove that no/overheal weapons are actually doing different things.
I have a screenshot of my pet with 7hp surviving with full health (7hp) after using Bronze Scorchstone (+15 hp) and being hit with 14 damage. It would have been impossible to survive without overheal (or healing springs overheal which I didn't have).
Another screenshot of same pet surviving with full health (7 hp) after using Cursed Elixir (+20 hp) and being hit with 11 damage, which which is also impossible without overheal.
Another screenshot of same pet dying after using MHP (+15 hp) and then taking 10 damage, which would be impossible unless it didn't overheal.
I can't prove these aren't doctored, but you can go ahead and try it yourself.
The following have/not have overheal:
Overheal: Ultranova, Dark Nova, Mud Mixture, Caustic Potion, Cursed Elixir, Scorchstones, Everlasting Crystal Apple
No overheal: Magical Healing Potion, Lesser Healing Scroll, Greater Healing Scroll, [Helm of Recovery, Rejuvenating Jar of Brains, Short Sleeved Yellow Tunic]
The bracketed ones are presumed (based on old-BD) but not confirmed.
Edited by KleinBucket, 07 June 2014 - 06:15 PM.