Gosh I hate those two Pokémons... :pink_no:
They are both natural enemies, like Zangoose and Seviper were in 3nd gen. Normal VS Poison, that was a well-balanced fight, we all agree. And those two Pokémon rocked.
And on the other side we have... A Steel/Bug Pokémon against a Fire type. Wow. We really wonder which one is gonna win, this battle is going to be fun. What a fair fight... Ok, now let's compare the opponents. :pink_evil:
Heatmor => HOW UGLY !! Seriously, what's that thing? Game Freak, what did you do? Plastic head, strange hands... Yes, just look at its hands. And now it's arms. Yes, we all agree, there is a little problem with proportions. Then its muffler tail... Lol. I can't say anything but lol, words to explain how ridiculous it is don't even exist.
Durant => Damn, we already have an ant Pokémon : Scizor. :pink_blankstare: And it's really more badass than Durant. And Durant isn't a Pokémon, it's just a red-eyed termite with an iron armor. It would be a good Digimon, but not a Pokémon.
Conclusion : I voted for Durant, it's a little less worse than Heatmor, which totally sucks. I know I was mean with that thing (I refuse to call that a Pokémon), but... I can't bear it, I'm so disappointed of what Pokémons become nowadays.