I think Tatum will be the best player we've had since Larry Bird. So, no, I'm not trading him for 3 years of Davis, even if it meant a title.
I think Tatum's just too good to give up.
Now, if it's 3 years of signing him and then he'll consider whether or not to sign a 5 year deal, then that's a different story. Then, Ainge would have a difficult decision to make.
I wouldn't want to be in Danny Ainge's shoes on this decision. IMO, the Pelicans have one goal in an Anthony Davis trade, and that's to extract Jayson Tatum away from the Celtics in any way they can. They might have been trolling the Lakers, but in reality, what they were saying was 'we don't want your crap players, and you have no picks'.