It's like a hybrid of Ferrari and Alpine solutions. The best of both worlds.
The Red Bull wing would already start to recover the flow attachment and the pressure after maybe only 130 degrees of back rotation (of the full 180 degrees required to close) which is what Alpine was after. From 130 degrees onwards it is behaving like a transition from a high downforce rear flap to a medium downforce angle when it closes (which goes beyond what Alpine achieved). So they are not only getting the straight mode and speed brake (like Ferrari) but they are also recovering the downforce faster (like Alpine) and generating even more load momentarily (unique and unlike anyone else).
Ferrari's wing doesn't work as efficiently (imo). They have the straight mode benefit, but the drawback of closing it in the "wrong" direction. There's no downforce until the wing is almost fully closed:
If I would rank the systems it would be:
(1) Red Bull (straight line gain and fast pressure recovery)
(2) Ferrari (because of the straight line gain)
(3) Alpine/Audi (because of the faster pressure recovery)
(4) Everyone else.