Is the PEQ on the FIIO EH11 accurate?

[Ventfull]

I heard on here that the PEQ values on some Fiio products aren't accurate to the PEQ values on Equalizer APO and Squig.link, due to Fiio using (Undocumented) XML format for PEQ filters. I was wondering if this was also true for the PEQ feature on the Fiio EH11? It might be a different implementation for headphones rather than the Fiio EQ implementation on their docs and amps. Any help is appreciated.