Does anyone know the major differences between Sperzels and ESP's new locking tuners?

I mainly want to know how big of string guages they can both fit. Absolute maximum before modding.
I heard they were just rebranded but who knows?
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Esp Ltd Ninja 600
Esp Ltd F-50
les paul elite
5watt jcm800 clone
Roland jc-55
Crate V33
Ibanez tubescreamer ts9
Keeley ds-1
The new ones are definitely not the same.

If you look at them you can see they are not rebranded Sperzels.