They run the fuel according to their tunes and regions, yes. 93 octane = 98 RON
Tuners (APR, GIAC, Unitronic, DM, REVO, and others) send tunes that will only work with 91oct, 92oct, and 93oct...and these vary depending on where customers reside.
The tuners always work directly with those having those misfire issues and it always came down to the plugs after much trial and error.