Armstrong was a very large 126-er and proved his power, chin and strength against ATG welterweights. Is there any featherweight you believe could consistently take him in a 15 rounder? Imo, even for poor stylistic matchups, he comes out on top against all of them more often than not.
Pep, Saddler, Saldivar (maybe Sanchez) would all be very tough fights. I suspect he'd beat them though. Pep would be a really intriguing style matchup. It would either be a one-sided points victory for Pep if Armstrong couldn't locate him or Armstrong would bludgeon Pep into a stoppage.
I don't know about consistently but my picks would be Saddler strength and power Pedroza dirty and tough Esparragoza power Arguello power Wright power And Arizmendi always gave him a fight. A guy I detest might give him some hairy moments early on, Hamed.
Sanchez would give him hell IMO. He performed best when the guy came at him. Of course, this is Henry Armstrong we're talking about. Saldivar always has a chance at Feather. People like Canzoneri would possibly beat him at higher weights.
From what I’ve seen he improved a lot through his run. I think Pacquiao would Beat him to be honest, the hand speed and endurance of prime Pacquiao would be difficult to conte d with over 15 rounds.