If you honestly believe Floyd beats Kirkland and does it so easily (being outweighed 15-20 pound) I don't see how you wouldn't have his rated as the single best fighter on Planet Earth.
He didn't get into the ring with Margocheato because he did not want to give Arum a final payday (I thought people realized that) and was focused on Oscar. . . and we all know how that worked out. But i agree that Kirkland is all wrong for PBF at this point in his career. James is really a beast ad can throw straight punches (despite what people say) and is relentless. I would not bet against PBF but I think James really is his worse match-up