Some points are correct. Jackson may have avoided the war completly ad President Trump said. He certainly would not have fought the war half assed for 3 years like Lincoln did.
His killing the Bank of the USA may have been in large part responsible for stopping Southern secession. Took out much of the Northeastern corruption cartel's power with that move.
The South would have likely been more successful seceding in the 1830s than they were after the North had had an additional 20 years of Southern money pumped into the Northern economy.