What if Marquez fought Hamed, Morales, and Barrera...

I'm going to go out on a limb and say he beats Barrera in a close and somewhat contervrisual manner. The biggest molment in the fight will be when Barrera knocks him down, but it will be ruled a slip. Barrera will hit marquez while he's still down and lose a point. The scorecards will be wider than the fight really was.
Just a guess on my part.

 

I'd make him a big favourite against Hamed, 50/50 with Morales and a slight underdog to Barrera (handspeed, handspeed, handspeed).

Featherweight Marquez was even more defensively responsible than that version of Barrera.

As Marquez' legs faded, he has become more stationary. In his physical prime he was quite "boring". He avoided wars and he used a lot more movement.

He wouldn't give Hamed that chance either. His entire style was based around that, back then.

 

We're talking about a serious opponent here in Marquez, whose ring intelligence is on par with Barrera's, and surpasses Hamed's by a very large margin; hardly "any old featherweight". The Prince's defense was also shown to be absolutely dismal at the top level, something a fast-handed, sharpshooting Marquez would definitely abuse.

 

No , Marquez is older .
And he had n injury in his back which is what made him start at n older age .

 

I think he wins all three.

 

At 126, he loses against all of them. At 130 and higher he might have the upper hand on all three but would be close.