I think this may illustrate the difference between ultimate size potential, and readily obtainable size of Bluegills. I have commented before on the lack of photos out there that show anglers with multiple large bluegills (> 1.5 lbs) Lots of outstanding single fish, but few instances where the pond consistently turns out giant fish in large or even moderate numbers.
If it were that easy to produce 1.5 lb bluegills, shouldn't we see lots more of them in our managed ponds?