Compared to XD16 it’s smaller and allows higher current, giving it overall twice as high current density - in the datasheet.
Real world? I don’t have any expectations.
Really I don’t care much as long as there’s no high CRI. But if someone wants to build a dense colour LED array these seem like a top pick.
ADDED:
Or one could use it to build this. It seems that for someone who doesn’t care about CRI this is the best option so far, beating both Oslon Pure and XD16 by a significant margin.