The latest round of the Jayson Tatum vs. Jaylen Brown debate has sparked some serious head-scratching among NBA fans—and for good reason. On Thursday's episode of ESPN's "Get Up," analyst Alan Hahn made a claim that left his co-hosts in disbelief: if the Boston Celtics had to choose between their two superstars, he'd trade Tatum and keep Brown.

"If you have to break it up, it's Tatum that'd be the guy you would want to trade, not Jaylen Brown," Hahn said, doubling down with, "If you had to make a choice between the two, Jaylen Brown's the guy I'm keeping." The studio audience—and his fellow panelists—couldn't help but laugh at the take.

Let's break down why this stance is so puzzling. Yes, Brown had a standout season this year, carrying the Celtics to 56 wins and the No. 2 seed in the Eastern Conference while Tatum was sidelined. He's also got the postseason resume to back it up, with an Eastern Conference Finals MVP and an NBA Finals MVP already on his shelf. But when you dig into the advanced stats, the picture becomes crystal clear: Tatum is the engine that makes Boston go.

According to plus/minus data, the Celtics are at their best with Tatum on the court and Brown off it. Conversely, they're at their worst when Brown plays without Tatum. Tatum is also younger and has already produced four or five seasons that match—or surpass—Brown's best year. Before this season, this wasn't even a conversation worth having.

For any serious basketball fan, the choice is obvious. Tatum is the more impactful player, the better long-term building block, and the guy you'd want leading your franchise. If Celtics president Brad Stevens ever has to make that tough call, the answer should be clear: Tatum stays, no questions asked.