The RK3328 is an applications processor, not a communications processor - different performance profiles. I doubt that the RK, even with a switch, would perform as well as a dedicated SoC/Switch combo like Brume…
Personal Opinion - anything Rockchip is going to be a challenge, not that they can’t be dealt with, but it is what it is…
While I’m partial to QCA SoC’s, I’ve done a project on MV3720, and it’s a solid chip.
Brume or Brume-W - it’s a good product… the $10 delta for the wireless version for some, it’s a win.