That will be 3 losses, still a good record and he's only 27 but I feel like this one would break him depending on how he loses (stoppage or dec).
If he loses by KO and gases cause of the weight loss, he will move up and maybe get a shot at a lesser title WBO or European or other lesser belts or just fight nobody's to make little money, for the rest of his career. Unless he invested his money buying franchises or the stock market or buying homes renting them out, maybe restaurants then just retire, no need to take unnecessary punishment. If he loses but the fight is close or he really won and got robbed and it was a great fight rematch maybe.
Broner has 7 kids...you do the math, he will be fighting until he's 45 and pile up 20 losses in the process.
Bingo! Not everyone ends up on the P4P list. Broner can make it a good tough fight for Mikey. Maybe even drops him in the fight. I dont think Broner will lose widely but cant see him getting the W. Broner will easily be a Berto, Zab Judah type fighter.
Still getting big fights as the underdog and getting showcased in one sided fights to look good in between them.