Although Moloney only lost against two top boxers in his weight e.g. Inoue and Emmanuel Rodríguez, but his winnings are mostly against weak boxers. Nawaphon Kaikanha who previously beaten by Moloney is one of the example, he have 58 fights but most of them are unknown boxers.
On other hand, Astrolabio lost 3 times in 2017-2018, but it's already 5 years ago and I think those lost are the factors how Astrolabio can reach at this point. He ever beat Guillermo Rigondeaux who's one of a good boxer, Astrolabio win via unanimous decision while Casimero only win via split decision.
Vincent's lost was early in his career, so we can say that maybe he was still too green that time or doesn't have the benefits of having a good trainer in his side. But once he matured, his career really took off and his last 3 wins is very impressive indeed, that's why now he has that opportunity to level up and become a champion in the bantamweight. And as what others mentioned, do not underestimate Filipinos as they might look weak or something, but they can deceived their opponents.
On the other hand, although Moloney has face tough opponents, he always feel short. Meaning he could not be in the caliber of elite fighters in bantamweight, more of a gate keeper boxer.
Even Jason Moloney himself knew that and that is why he didn't pushed through for the vacant WBC belt because he will be facing the Filipino Flash in that path, instead, he picked the vacant WBO where he will face Vincent Astrolabio, a not so known boxer compared to Nonito Donaire but not good to underestimate as his recent records can vouch him that Vincent is not an easy opponent to fight with.
Based from the current odds, Moloney is the early favorite of the bookies.
But yes, Moloney should not underestimate Astrolabio who is less known among the boxing community.
From his record, it seems that he has something to offer to the boxing fans.
Moloney may have chosen an easier fight but this one I believe is not so easier as Astrolabio is a Filipino boxer.
We know how they are being prepared for the fight and their motivation to win, it's all for the family.