They were so terrible that when they fell, all of the vassalized populations invaded the capital and ate them in revenge.

...

The level of barbarian you would have to be to make your enemies patiently wait until they could eat you out of spite is pretty high.

That's actually worse than when Vlad invaded Ottoman territory, and burned all the cities & towns along the way, and impaled hundreds of people in each town, mostly the Ottoman appointed leadership and he got swarms of volunteers.

If Vlad The Impaler sounds like the good guy to people who are watching their neighbors slowly descend spikes impaled through their anus & out their mouth, as they die horribly from exposure among a town of burning rubble, then clearly the Ottomans are pretty shit.