Morrison Tua was exciting and had some underrated tools like his defense but most of his losses where were the other guy kept him on the outside, avoided trading with him while Tua just followed them in straight lines and barely threw anything back. Morrison would fight Tua exactly like he did Foreman and win a decision.
Morrison could outbox Tua, but would he? If we are talking best version v best version. Morrison on points, kid is underrated in my opinion. Of we are talking most likely versions, Tua by KO in a short, fun fight with both eating huge punches and Tua maybe even getting rocked...
Tua in 1 round, he can take what Morrison has, but Morrison can’t take what Tua has, and they’re both going to be in range to get hit. If Morrison runs, he gasses and gets stopped. Best version of old Foreman would’ve beat Morrison, the one from the Cooper or Cooney fight for example.
So you have two hard punching KO artists one is known to have a very suspect chin the other is known to have an iron chin it's a no brainer. Tua by KO is the only correct answer.