Crawford is one of the most frightening boxer-punchers in the recent 15 years. His fighting IQ is very high, he s adaptable (can be defensive / offensive), and has legitimate dangerous power due to high accuracy. He also has a 2 inch reach advantage on Floyd and has multiple jabs, as well as being active with punches thrown. Floyd wouldn t fight Crawford even if he was in his prime.
Shawn Porter is a B+ level pressure-inside fighter (of the swarming variety). He has flaws and his skill set has never been elite. HOWEVER, he is a bruising, strong fighter that has a knack for smothering his opponent s punches (as well as his own). Floyd could pot-shot Porter all night long, but Porter would be in his face as well (taking away Floyd s rest in between punches). For Floyd, this fight would be like crawling through mud for 2 miles...and then swimming out in the ocean for 4 more miles. Porter would also get to Floyd s body. Think of Porter as a much stronger more energetic version of Jose Luis Castillo (a pressure fighter that gave a prime Floyd problems down at Lightweight). By boxing standards, I can see Porter beating Floyd by a close decision...but if it s in Las Vegas, I can also see Floyd beating Porter by close decision. I say 55-45 in favor of Porter. Styles make fights, and this style is problematic for Floyd.
I think Floyd (especially a prime Floyd) would beat Keith Thurman by a close, competitive decision. The reason is that Thurman has always had a habit of using his athleticism over offensive-defensive-transition theory (he relies on reflexes and throwing sudden explosive counters from off-angles, rather than setting up combinations with intelligent footwork). Because of this, Floyd would probably be able to fight at his own pace, feint Thurman a lot, and smother/clinch Thurman if he feels trapped. Thurman is a legit boxer-puncher and dangerous, but he s most dangerous countering an attacking opponent. Floyd wouldn t give him that. Thurman would have to become much more aggressive versus Floyd (knowing he s going to get hit too), but that s not really Thurman s MO.