I agree somewhat with the poster above me. The biggest problem with Flamethrower is that it's affected by DM. So if you DM first, and then Nat or scizor comes in, I'm almost certain its not an OHKO.
@Thatguy: Your set looks interesting. Since I'm currently doing a round of DD tests, I'll definitely try it out. Even if your specific moves don't work out, I think you have the logic right. Bulky DD should be really, really bulky and offensive DD should focus on offense. I think the current Bulky DD is too focused on maintaining offensive firepower - max HP EVs isn't bulky enough to not be 2HKO by an ice move so I rather have a slower, less powerful, but insanely bulky nite than one that's in the middle.
@Thatguy: Your set looks interesting. Since I'm currently doing a round of DD tests, I'll definitely try it out. Even if your specific moves don't work out, I think you have the logic right. Bulky DD should be really, really bulky and offensive DD should focus on offense. I think the current Bulky DD is too focused on maintaining offensive firepower - max HP EVs isn't bulky enough to not be 2HKO by an ice move so I rather have a slower, less powerful, but insanely bulky nite than one that's in the middle.