That's more a matter of better technology/means than simple bloodthirstiness. I imagine if you took all the brutality meted out any European power in Asia over the 200-400 years it had been going on for (what we did to Africa and the Americas is each a whole book of fuck on its own) and squeezed it into the 80 year window Japan was an Imperial power, the results in terms of bodies and suffering would be about the same, or still behind the curve.
One thing I do know is that more than a few British and Dutch held much, much more of a grudge towards Japan than the Americans did/allowed.
Edit:
I think a problem with cringe in alternate history is that, if your starting point for a TL is the destination eg dystopian hellhole you think will make a good story or setting, working backwards is invariably going to get cringe. God knows i'm guilty of it (eg my asinine 'FDR Morgenthau Plan'd all of Europe" idea)
One thing I do know is that more than a few British and Dutch held much, much more of a grudge towards Japan than the Americans did/allowed.
Edit:
I think a problem with cringe in alternate history is that, if your starting point for a TL is the destination eg dystopian hellhole you think will make a good story or setting, working backwards is invariably going to get cringe. God knows i'm guilty of it (eg my asinine 'FDR Morgenthau Plan'd all of Europe" idea)
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