Excellent post. You can also increase the baseline super j's value by hitting additional jackpots after you have qualified the super. But I'm not certain how the incrementation above the base line super J value works.
Quoted from Brad200X:Super value is 1 million times all gears added together. So, a 3rd gear super is 6 million - (1+2+3) X 1 million = 6 mill. 6th gear has a special one time only super worth 50 million. All supers after that are worth around 20: (1+2+3+4+5+6)