At age 24, Duran put up a 132 wRC+ over 283 PAs in AAA.Oh I think Duran sucks, but I was answering the question ("what Duran adds that Hamilton doesn’t"). It hasn't translated to MLB but Duran has shown the ability to hit throughout the minors. He has zero baseball instincts and his fielding is terrible, so even if he hit a little bit, he would still stink. Hamilton's a different player with some interesting strengths but his hitting looks marginal, and he's not young.
At age 24, from June 28 of this year on, David Hamilton put up a 137 wRC+ over 279 PA in AA.
It's hard to make a direct comparison because of the lost 2020 season, where Duran would have likely repeated AA after a so-so 2019 there. Duran had a really nice two-month stretch in AAA until July 6 (.976 OPS, 156 wRC+). Since that time he's hit .264/.339/.456 in AAA, good for a respectable but not thrilling 110 wRC+.
I don't think Duran is a lost cause or anything. But I genuinely struggle to see anything in his minor league numbers that's appreciably better than Hamilton. Duran has a bit more pop and about .010 points of batting average, which Hamilton makes up for it with a higher walk rate and some truly gaudy stolen base totals. It seems like some of the rule changes should help them both.