Matsuri isn't a top tier black but she shouldn't be unduly underrated. She can't replace what Uzume does but that is true of basically every unit in the game other than the stupidly broken Lapis and thus is barely useful as a benchmark. I say this because other than the deployment discount--which, frankly, isn't even the big reason people use Uzume anyway--Matsuri doesn't actually have much overlap with her platinum counterpart. The important bit to understand is that her skills don't turn her into something shitty for early deployment like a heavy armor (expensive, all D, no O) or magic fencer (skill dependent, low block count), they turn her into heavily discounted versions of Samurai or the Dark Knight (way less stats admittedly, but for 12 less UP it's hard to complain). Factoring in the discounts she's dirt cheap for someone capable of being a 900+ damage multi-hitter (regular skill) and her SAW has a niche in majins as one of the few physical supports with enough range and power to excel without dancers or dangerous placement. Throw in the quality passive and you have to whale pretty hard before she's an easy cut on most teams. And hell, if you whale hard enough, long enough, there's an actually an AW2 version that can get CR'd down to 12 up, which is fucking hilarious.