Inoue is a better fighter obviously but he's only had 1 fight at Featherweight, vs one of the lightest hitting champions currently with only 8 stoppages. Hamed was a murderous puncher and one of the hardest hitting Featherweights of all time, a prime Hamed would be by far Inoue's biggest challenge to date. I know it's like the popular thing to do now to discredit Hamed because of his loss to Barrera, and TBH i'm not a big fan of his but Hamed gets underrated nowadays IMO.
Styles make fights. Barerra's technical brilliance was comparable to Inoue and he was naturally bigger. We are talking about a much better fighter than Nonito Donaire.
Sloppy boxing ability ? he outboxed two Mexican ATG's in Barerra, Canizales, who are far better names than anyone Inoue has beaten, outside of Donaire who was on the wrong side of 30.
I think Naz could beat Inoue at 126. We are talking about a bigger fighter with arguably p4p goat power. He is dangerous for a lot of smaller guys at feather with his unusual style. Would have been a great fight.