I have a question: Why is Assault Vest soo great on Clawitzer? I mean, let's just take a prominent OU Threat, Rotom-W:
252+ SpA Rotom-W Thunderbolt vs. 252 HP / 4 SpD Assault Vest Clawitzer: 204-242 (58.9 - 69.9%) -- guaranteed 2HKO
252+ SpA Rotom-W Thunderbolt vs. 252 HP / 4 SpD Clawitzer: 306-362 (88.4 - 104.6%) -- 31.3% chance to OHKO
So, Rotom-W always 2HKOes, maybe OHKO without Assault Vest, but in return:
252+ SpA Mega Launcher Clawitzer Dragon Pulse vs. 252 HP / 0 SpD Rotom-W: 136-160 (44.7 - 52.6%) -- guaranteed 3HKO after Leftovers recovery
Dragon Pulse is Clawitzer's most powerful move against Rotom-W. It won't really make a difference, why not slap on a Choice Specs/Leftovers/Life Orb instead?
Also, I'd like to bring discussion of U-Turn on Clawitzer! It seems useful for momentum, what else would you guys see use of U-Turn with on Clawitzer?