Maybe I am in the minority but I just did TPA-ATL-LAS on a 739 (TPA-ATL) and A321 (ATL-LAS) and couldn’t tell much at all difference in the legroom in 1D on both.
I am 5’8” and would put my feet on the bulkhead to stretch on the A321 on occasion. Can’t stretch my legs fully out on either one.