Frankly, if we're talking $ spent per lb of fish growth, I suspect the Tractor Supply feed wins. Now if we're talking longevity & health of the fish, plus maybe overfertilization issues of the pond, the winner would likely differ.
No one "right" answer. Very much depends on goals, budget.
Nope!! I did a test a number of years back using Tractor Supply Sportmans Choice food. The amount of food that was needed was astounding. I was feeding Sportsmans Choice food to Hybrid Bluegills (not the catfish food) and feeding 120# of food still didn't get the fish weight that 40# of Optimal did.