In terms of speed Inoue will lose but his left Hook will clearly be a problem considering in this case he has the advantage because Donaire is not used to holding back left-handed boxers.
But on the other hand, when doing this, there will also be a bit of trouble for Inoue because if you look at Donaire's determination and fast movement and his accurate punches, this will obviously be a hassle for Inoue.
Are you late in the news? Donaire got demolished by Inoue and because of the performance of Donaire they said it was a scripted fight. I cant blame the watchers since Donaire was like performing that he didnt trained for the fight. He barely threw heavy punches, I guess the early punch to his temple got him and effected everything.
I was left behind and forgot the date due to a lot of work in the real world and only saw reruns there.
I'm quite surprised how Impressive Inoue looks like this and Donaire can't do much there.
Inoue's left hook is truly one of those fearsome weapons now and indeed with this weapon he actually managed to win the rematch and managed to add the WBC bantamweight title to his WBA and IBF.
He wont be called a "Monster" for nothing and he do able to beat up some famous and strong boxers despite for people on looking down on him and now this kid is undefeated and almost of his wins are all KO's
which does indicate that his punches were no joke.This kid does really have that good technicality on which we do see some faint jabs now which is something that we could only see in anime
for those well executed kind of movement but now he had really proved out that it could really be a good weap on taking advantage against players.
He really carried that monicker, as the "Monster" because of his power behind those punches. And it's now being magnified after knocking out one of the legends in boxing. And then send signals to other bantamweights and even to the next weight class although that power will have to be check if he can carry it to the next level or not. I guess life imitating art here, we all know that there are Japanese anime about sports, i.e basketball boxing and others and maybe there will be future Japanese character similar to Inoue,

We know that Japan does have different sport-based kind of anime which same as you said that there would really be a time that he might really be projected out. Haha.
Power of Inoue on the current class or weight is something that might be effective or relevant on higher division and its true that this one do really make out some noise.
I wont be surprised that this kid will really be that famous and even more great on his career if he could sustain out this kind of fighting and this
kid does really have that capability on taking out big guys.
We all know already that he has the power, but now he is more faster and his punch are really that firm. But I would agree that it has to be tested on the higher weight class. Just maybe he will carry it but if he is not a natural featherweight, maybe he will encounter boxers that can withstand his power.
Anyhow, I'm not familiar with Japanese anime, but I'm sure he is a hero in Japan now, him and his brother both won in this fight and could be the next big Japanese superstar. But they should conquer the US and fight there.