Digital EQs don't sound different. It's the GUI you're paying for (which, IMO, Fabfilter is the absolute king of).
Obviously linear phase is different and ReaEQ doesn't have this. FWIW, it's not standard practice to use linear phase EQs even in big studios.
The only time an EQ sounds different is if it's emulating the distortion of a hardware unit.
I remember some article where a guy nulled various EQs with a standard one. Might even have been ReaEQ.
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