Radar is pretty much useless, isn’t that what M163 players like to claim? It is now the same BR as the radarless Shilka, and both are too low.
I don’t see why it would go down when all it loses is a radar that doesn’t work, unless of course M163 players are lying and are just trying to get their 3000rpm SPAA to be lower than a 450rpm one that has worse gun handling.