I'm already tired of this RR. Play 10 games on Castle, and if you win 2-3 of them using RR, then I'll agree that it's effective.
I don't have time for that many games; I'd rather play in tournaments. 10 games is not enough to draw conclusions; you need to play many more. I didn't mean to talk about that. If, out of your 10 losses (let's say you lost 10 games to different players over some time), 2 losses occur when the red rush rule is in effect and it somehow manifests itself, giving red an advantage, then that will be a clear indicator that the rule has a significant impact. This rule doesn't necessarily have to guarantee a 100% win in the final battle. The influence can be indirect and affect various aspects of the game, thereby exerting pressure that leads to a loss. There can be a huge number of such factors, and in a lost game, you can always find them for the red player (especially in drawn-out games on High Level +). Besides, it's quite easy to play against the rule itself. You can simply build a fortress on 127 and lose to blue, and then say, "Well, there was no RR." The point is not about who wins, but about the influence of RR in favor of red. A higher-skilled player may win without even noticing this rule, but in a game between equally skilled players, it will still take its toll to some extent. If you really want to test the rule, play as blue against everyone and allow all your opponents to use RR. In SOD. And then, when you have about 30 losses, analyze them.