You remember our bet in 2022? Just replace Steph with Luka, and there's your outcome. I don't think Tatum can hang with the absolute upper echelon (however it's possible he doesn't need to, he just needs to do enough and the superior talent around him can allow the W). Though I will say the experience of losing in that manner will have Celtics come out with a vengeance, and they have Jrue this time around.