“And how exactly does Halal butchery differ from Kosher butchery?”
Kosher butchery, by definition, is supposed to be as quick and painless as possible to the animal. That’s it’s primary purpose.
In real life, many of the crooks who ran the meat packing plants gave lip service, at best, to the required practices.
There is a huge internal movement within Judaism to hold butchers to the standards that were set long ago.
Is there anything a Jew can eat that a muslim can’t?