This fighter is power-wise very underrated, he had an unorthodox fighting style and he could finish fighters with good chins with just one punch. Against which ATG- LWW- fighters would you give him a little chance because of his unpredictable and hard punches? I name now some examples: JCC Loi Tszyu Perkins Pryor Arcari Cervantes Hernandez Ortiz etc.
He might score a knockdown on Pryor- who had a tendency to get ahead of himself when going on the attack- but I can't see him winning. We all know what Locce did to him, so I can see the same thing happening when he meets Benitez. Loi had an incredible chin, and was much better technically...so, no go there. JCC was just too good, and if you relied on your power to win he ate you alive (case in point Rosario). So...I can't see Fuji having any more than a slight puncher's chance against the absolute best at 140lbs.