The similarity is due to similar proportions of paleo-Balkanic and Slavic ancestry, dufus. Arvanites differ significantly from you when paleo-Balkan ancestry is broken down into Greek, Illyrian, Thracian, etc. And the reason is because theyd escend overwhelmingly from assimilated locals.
I never claimed ”100% similar” or anything along those lines. Stop attacking straw man you absolute buffoon. I’ve been very clear with my position. Gradual assimilations compounded, and the result of that explains why the genetic and physical data looks like it does.