I think betting on Mario Barrios is more reliable.
Watching some of Manny's training videos actually convinced me that he won’t go down that easily. He's old, but he's clearly on a mission to prove that age is just a number. In fact, he even gave a guarantee to fans who are worried about his comeback, saying that he knows his own body and understands exactly what he's doing.
So , just for fun, I think I’ll take a shot and bet on Pacman to win ..either by decision or KO.
Two different outcomes, two bets. Why not?

Pacman is the only champion in 8 weight classes and definitely one of the best boxers of today, so even at 46 he can knock out many more boxers and his training is impressive.
Nevertheless Freddie Roach was against such a Pacman comeback and considering their long-standing partnership you can definitely say that he is worried about Pacman. In addition, his opponent is not just average boxer, but still a champion in this weight class and it will be more difficult to knock out such a boxer than a passable opponent.
In general, my heart would like to bet on Pacquiao, especially on a beautiful knockout, but my mind says to bet on Mario Barrios.
You would be having that kind of confusion because whenever our mind and emotion/heart is totally that having that opposition then you would definitely be having that kind of confusion on which it would be that so hard for you to make out such decisions because you would be having those second thoughts whether you should be betting on Pacquiao or with Barrios. Lets just that accept the fact that there would be that deterioration when it comes to human body. Lets say that you are a boxing legend but it doesnt mean that you would be that the same when you are that on your prime. Its already obvious and evident when it comes on his fighting even on just that looking into that recent exhibition fights on which Pacquiao did even though its a bit mismatch with that because of height but you can see the sluggishness when it comes into those punches. For the current age of MP then it is that old on something on a sports that involved body beating. For Freddie Roach then its normal that he would be that having that concern towards MP's health.
I want Pacquiao to win also since he is a good fighter and citizen here in Philippines by helping the poor using his money earned on boxing.
I’m just being realistic here that Pacquiao is on disadvantage because age has a high impact on physical games most importantly boxing. Surely he still has K.O potential but he is fighting a prominent boxer too on this current generation.
Anyway, he is still winning money regardless of the result. I will just watch this fight in the sideline and avoid betting.
There are those talks about that Pacquiao did made out some boast about helping the people but still he do end up on losing up that electoral of senators on which there are even those talks
that the main reason on why he made some comeback again into boxing field is just that he do want to make or earn money because of the expenses with that politics.
Well, there's nothing we can do about it and its none of our business on whatever the reason behind of such comeback but much sure that there are tons of fans that would be that
liking or wanting to see their idol would be coming back inside the ring.