On the rent & save end, if you put away 1500/month toward saving at a saving rate of 5.5% over the last 4 years, you’ll have $80,000.
The $783k sold price would be $736k after 6% commission. So it would yield $191k profit after 4 years. So he/she still made over 2X what he/she could have made by rent and save. Obviously, if you shift that buy date to 2 years later, we’ll see how the numbers play out in 2 years. I highly doubt it would yield the same result.