When you're talking competitive edge, against Left-Spin, you have a significantly higher chance of success, weak-launched or otherwise(!), using CS.
RSF can only TS with half of the competence a CS can - and even then, it will still not spin as long. RSF's aggression is hideously overstated - while it CAN be mean and evil like a heavily worn RF, it CANNOT touch the speed of a CS in Aggressive or even Semi-Aggressive condition, and you're just blatantly wrong to think otherwise. RSF also cannot be manipulated nearly to the degree that CS can. Two or three simple movement patterns(none of which change the reality of its stamina problem) versus four or five which dynamically alter the part's Stamina, Defense, and Attack.
RSF is not as fast as CS in conditions that favor aggression. It also cannot dynamically shift between types during combat. Anti-Meta and Defense-Stamina Balance both depend on factors that CS excels at. RSF is a fool's gamble in both situations, comparatively.
"Appropriate Condition" will be defined by the parameters I outlined, which are literally idiot-proof. I don't even want to see one single person say anything along the lines of "Calm is hard to discern". There is no "opinion" to be had but the ones people with a brain in their skull have - and among those people, I severely doubt there would be any argument on the definitions of "Calm", "Semi-Aggro", and "Aggressive".
I have said every single thing there is to be said on this argument, and clarified it to the nth degree. This thread never should've been opened. If CS only even had ONE unique application or distinguishing trait(though it has three at the bare minimum), banning it from testing would be absolutely out of the question.
I am done here; there is no more argument to be made. The "unreliability" of CS testing is being disgustingly overestimated here, when it is quite easy to classify launch type(Launch type being stated is dictated in Standard Procedures, in point of fact) and CS condition. If ANYTHING were to be done because of this thread, the most I would suggest(and it's something I'd suggest anyway!) is including a uniform Launch Procedure in the Standard Procedures for CS testing, unless it is the strict intention of the use of the CS to behave an alternate way, at which point it should be mentioned regardless.
This thread, given that it involves the idea of banning something, was more likely to instigate argument than discussion right from the beginning, and with the argument being so uneven... well, in general, I do not like arguing, especially not when it comes to part viability, given that it is such an extremely variable creature in and of itself. My findings with RSF are based on both molds, which I have two each of(I found another one!), and tested as aggressive and calm parts. My findings on CS are based on my absolutely ludicrous amount of CS usage.
I do not expect you to have the same findings, because quite frankly, rubber tips are a beast of variation among all people. Keep in mind that you especially have a physique capable of more consistent(and likely powerful/controlled) launching than I, and many other Beybladers, do. Ultimately, I feel exceptionally strongly that while there are some unstated variables in tests regarding this part, they are not the giant they're made out to be, and resolving them is as simple as mandating a few more things in test result procedures.
SSJ, I had your post quoted, but for the life of me I couldn't get it to format in a non-ridiculous way. I apologize.
EDIT:
Oh, actually, I did have one more thing to say. Tests are valuable in even the most ludicrous of conditions - but when the conditions are as simple as launch variation(which, again, is mandated to be stated by the Standard Procedures of the Customizations Forum) and aggression of the part, it can be quite interesting and thought-provoking to see tests against Aggressive CS, Semi-Aggro CS, and Calm CS, as one will very surely encounter at least two of the three types in your average 12+ person tournament(unless it is in a region dominated by Stamina or Attack, of course).
Sure, it'll start arguments, but... what doesn't, exactly, in the customizations forum? That forum can be anything from a nice, helpful test factory(read: absolutely never), to something more akin to a bar fight that kangaroos have been introduced to. CS is no more argument-inducing than any other tip that launch method has impact on - in fact, lately, most fights have been about RF and MB, not CS.
Food for thought, I guess? But, the horse is pretty much dead. Arguing about this, when it is very clear that it was never a viable subject for argument in the first place, is just wasting the time, resources, and blood pressure of the Advanced Forum. I have personally been exceptionally aggressive in this discussion, and it is likely because I do have such comfort with this part, and for that I apologize.
This post was huge. It started out much smaller, but I wanted to cut out the likelihood of me having to continue arguing, so I got out absolutely everything I could think of saying.