Fine, I'll hand SystemsThinker the volume argument. Joe has more records, more remixes, more features. Nobody's disputing he stayed busy. But busy isn't the same as better, and that's exactly where his whole case collapses.
He's measuring a career. The battle is about the songs. When you strip the chart math away, you're left with the simple test: whose best work hits harder? Donell's peak is self-written, and "Where I Wanna Be" still guts people a quarter century later. Joe's biggest records leaned on other writers and producers to do the emotional lifting.
A chain reaction of hits is a marketing metric. If consistency means never reaching the ceiling Donell reached, that's not a win, that's a longer, flatter line.
And my cookout point stands unanswered. Crowds sing "U Know What's Up" word for word. Nobody's belting "I Wanna Know" like that. Deeper catalogue, shallower impact. Donell still takes it.