This subject has been beaten to death.
To generalize - you have the opportunity to make more at SWA, but you may work harder to make that happen.
Our trips are more dense, less about the overnight, and more about making widgets for the company. Along the way, there are some fairly sweet deals for pilots interested in making money and going home to have time off.
You can fly your line, but you are missing a great opportunity to tune your schedule to your desires.