As far as I know, Vishishtadvaitha and Dvaita base their arguments on Vedas.
As Buddhists reject the Vedas, how would the dualistic schools of Vedanta debate with Buddhists and establish Veda pramanya?
For Eg: just adreess the existence of soul. Buddhists hold there is no soul. Vedantists hold there is soul. What is the proof according to Vedantists?