CB Diggersby > Life:
252+ Atk Choice Band Huge Power Diggersby Return vs. 252 HP / 0 Def Rotom-W: 306-360 (100.6 - 118.4%) -- guaranteed OHKO
252+ Atk Choice Band Huge Power Diggersby Earthquake vs. 252 HP / 232+ Def Skarmory: 366-432 (109.5 - 129.3%) -- guaranteed OHKO (Roost)
252+ Atk Choice Band Huge Power Diggersby Earthquake vs. 0 HP / 0 Def Lucario: 848-1002 (301.7 - 356.5%) -- guaranteed OHKO
252 SpA Adaptability Mega Lucario Vacuum Wave vs. 0 HP / 4 SpD Diggersby: 228-272 (73.3 - 87.4%) -- guaranteed 2HKO
Shall I go on, or?
You should provide some meaningful calcs.. CB Digs won't catch Skarmory on Roost anytime soon imo, and we all know any STAB EQ user would kill Luke. How about calcs against the most threatening physical walls in OU atm, like megasaur, slowbro, phys def Rotom-W, Zapdos, Hippowdon, etc ?
I'm not dismissing CB Digs, but the calcs you provided are a little.. pointless, lol.