Pashtuns vs Genghis khan's Mongols

Re: Pashtuns vs Genghis khan’s Mongols

All the indo-aryans from stretching from punjab to bengal once migrated from central asia if history of aryan invasion is to be believed. I believe jats have indo-aryan/hindu roots rather than indo-iranian (scythians were eastern iranian people). If jats are scythians then why they are not considered indo-iranians?
Read this

http://www.jatland.com/home/Indo-Aryan_origin_of_Jats