Okay...
- COC
- Special, logia like, paramecia
- Awakening, can turn his surroundings into mochi, signature move: peerless donuts. Is able to injure Bound Man quite good, with brute force!
- super armament haki (hence high durability which was only overpowered by Bound Man, can be combined with his stickiness)
- Speed to tag Snake Man in CQC
- Attack power to match Snake Man in CQC, attack power to deflect Kong Guns
Either I don't understand what an one trick pony truly is - in this case Katakuri might really be one since he's versatile af - or you're simply wrong about this lol.
Before you argue, it's clear that King is physically much stronger than Katakuri, he can also tank a lot more. But as I said, Katakuri dodges, he aims at weakspots, he uses his surroundings to attack. He's basically a better version of Doflamingo but with op COO.