I'd guess Ortiz based on being more accurate and landing the harder punches, but we have no idea how Ortiz would hold up over 12 rounds at this point.
I really like both fighters, but the only way I can see Bradley losing is him getting KOed. I would take Bradley by decision. It wouldn't surprise me if Ortiz went down in this one. Don't get it confused about Bradley's chin. That was his first and second knockdown of his career, amatuer or pro.
Ortiz hasn't really been battle tested . . he has the power to put Bradley down though. . & down hard.
Bradley is quickly becoming one of my favs... Based on Ortiz last performance and not passing his first "Gut check" I'd favor TB. But it would be auto FOTY. (When it happens)
But he has high enough work rate and rough tactics that can discourage his opponents like he did against Kendall Holt.