Lee
@ Thick Club
607 Atk vs 368 Def & 420 HP (120 Base Power): 213 - 252 (50.71% - 60.00%)I actually got 49%-58% for CB Megahorn vs Hippowdon not sure if I got something wrong.
Here's the calculation for +1 Jolly Life Orb Hustle Aianto using X-Scissor on the same Hippowdon.But theres a big problem with the damage levels of Megahorn, I actually also got the exact same damage figures from an Aianto with +speed nature after one Claw Sharpen using X-Scissor.
Big issue here is it means this thing has competition even for its one niche of ridiculous bug damage + steel/bug typing something it could do without. On one hand you have a slow fairly sturdy steel bug vs a extremely fast steel bug with better physical defense but non-existant s.def with the exact same levels of damage and a non-sucky movepool.
690 Atk vs 368 Def & 420 HP (80 Base Power): 211 - 249 (50.24% - 59.29%)
It should be heavily emphasised that Aianto needs a turn of setup to get to those levels and that's not going to be very easy with 58 base HP and 48 base SpD. Not to mention he needs to lose 10% of his health every turn due to the Life Orb. On account of that, I don't think your comparison is entirely fair.