Assuming we can use Lopez at his best? Bradley gets put to sleep. I think Bradley's chin is VASTLY overrated! Guy got dropped hard by Kendall Holt, hurt countless times by Provo, and saved by the final bell against Jesse Vargas. Holt and Provo were big punchers, but Jesse Vargas is not much of a hitter. Neither of those three hit anywhere remotely close to as hard as JL Lopez. The problem for Timmy is that he can't dent Lopez in the LEAST bit. Lopez would smile at Bradley's punches, whereas the reverse is not true. Once again, this is assuming Lopez at his best - I.E. the Lopez that destroyed Loughran, Campas, and had Quartey almost out in the 11th. Bradley's not surviving those versions of Lopez. He's not all that hard to hit, and as I just said he's been put in dire trouble by much lesser punchers. Lopez KO 10.
I'd take Lopez by stoppage. I remember Vargas having Bradley damn near out on his feet, and Vargas wasn't a huge hitter like Lopez.