I agree, I ran calcs a while ago, Reckless HJK hits harder than Victini's V-create, and is only weaker than PP Medicham's HJK and Sheer Force Darm's Flare Blitz, assuming same nature, item, and type of hit.
Example:
252+ Atk Choice Band Sheer Force Darmanitan Flare Blitz vs. 0 HP / 4 Def Raikou: 559-658 (174.14 - 204.98%) -- guaranteed OHKO
252+ Atk Choice Band Pure Power Medicham Hi Jump Kick vs. 0 HP / 4 Def Raikou: 537-633 (167.28 - 197.19%) -- guaranteed OHKO
252+ Atk Choice Band Reckless Mienshao Hi Jump Kick vs. 0 HP / 4 Def Raikou: 514-606 (160.12 - 188.78%) -- guaranteed OHKO
252+ Atk Choice Band Victini V-create vs. 0 HP / 4 Def Raikou: 508-598 (158.25 - 186.29%) -- guaranteed OHKO
The biggest problem with that is that HJK has a 10% chance of missing and it can be scouted with Protect, which really hurts without Regen. Other than that, it really destroys stuff, but I dunno if it's much better than Scarf considering the latter already hits hard on most stuff.
Example:
252+ Atk Choice Band Sheer Force Darmanitan Flare Blitz vs. 0 HP / 4 Def Raikou: 559-658 (174.14 - 204.98%) -- guaranteed OHKO
252+ Atk Choice Band Pure Power Medicham Hi Jump Kick vs. 0 HP / 4 Def Raikou: 537-633 (167.28 - 197.19%) -- guaranteed OHKO
252+ Atk Choice Band Reckless Mienshao Hi Jump Kick vs. 0 HP / 4 Def Raikou: 514-606 (160.12 - 188.78%) -- guaranteed OHKO
252+ Atk Choice Band Victini V-create vs. 0 HP / 4 Def Raikou: 508-598 (158.25 - 186.29%) -- guaranteed OHKO
The biggest problem with that is that HJK has a 10% chance of missing and it can be scouted with Protect, which really hurts without Regen. Other than that, it really destroys stuff, but I dunno if it's much better than Scarf considering the latter already hits hard on most stuff.