SI ranks Jeffrey Loria at No. 4 on the Worst Owner in Baseball list. If having a "worst owner" meant my team won a freaking World Series -- like the Marlins did in Loria's second year -- I'd take it. (We have this debate all the time: Would you rather win 2 titles in 10 years but suck the other 8 -- like the Marlins -- or win zero titles in 10 years, but make the playoffs a bunch?)
As for the best owner, let's normalize the rankings so we can compare them dollar-for-dollar. How much of John Henry or George Steinbrenner's "best" come from merely spending $200 million a year? (Granted, I'll credit them for the willingness to spend it, even if they are starting from revenue platforms that allow them to spend that much without going broke.)
Give me Stuart Sternberg in Tampa, who does it on a fraction of the budget. I'd love to see what would happen to the Red Sox or Yankees if they could only spend $35 million a year.