"I am an economist. He is a lawyer. How can he be better than me?" Swamy, whose antagonism for Jaitley is open, said at an event today.
Swamy was replying to a query on whether he will make a better finance minister than Jaitley at the India Today Mind Rocks Summit.
Swamy's relentless criticism of former RBI governor Raghuram Rajan was also seen as indirect attack on Jaitley.
The reply came following AIMIM leader Asaduddin Owaisi's comment that inflation would have been in check had Swamy been the finance minister.
"There has been a fight between southern Brahmins and northern Brahmins for long," Swamy later quipped.
On being asked by the moderator whether BJP has imposed a gag on him, Swamy took again a jibe at Jaitley, saying, "There is no gag order on me. Your problem is that you talk to Jaitley a lot."