I'm not "crying for a nerf" just stating my opinion on the experience that I've had. First of all testing stuff in MK9 isn't very easy. Before I go further, I would like to state that I've been told that NRS is aware of the training mode problem, and may be including a "record the training mode dummy" feature. There is a way to test some things in training mode by yourself though. What you would do is set the AI to Blocking "Always", "Duck" and set the Wake-Up move to "On". Then you would do a NJP (Neutral Jump Punch) to get a knockdown. You would then get next to the AI, block and just wait for the AI to do a wake-up move. The wake-up move is random, so you'll have to wait until it's the right one. Then just try and block and punish, or whatever is you want to test.
Kung Lao's spin is reminiscent of UMK3 Kabal's dash. Kabal's dash in UMK3 is fast, very fast. It can punish nearly everything in the game, including jumps from full screen. In fact, the main reason Kabal is the #1 character in the game, is because of his dash. However, the dash is easily punished on block. If it weren't easy to punish, he very may well be considered a God Tier character. And every top UMK3 player would say that if a new UMK3 were to be made, slightly nerfing the dash would be the way to go. Another reason it's like UMK3 Kabal's dash, is because you have to play Kung Lao in a different way than every other character. You always have to be weary of the spin. You are a lot more restricted because of it.
Now, Kung Lao's spin in MK9 isn't as good as UMK3 Kabal's dash, but it's pretty close. The only difference properties wise is the range and the recovery. The spin can punish a lot of things on block or otherwise, it's probably the best aa (anti-air) in the game, and it can prevent rushdown effectively. The problem is, is that it's not easily punished on block. It can be punished, but it requires strict timing to do so. Some characters may not even be able to punish it, I haven't tested it with everyone yet. It's an imbalanced risk/reward. Being able to throw out the spin with little risk, is a bad thing. Especially when you consider the reward for landing the spin.
The only defense right now is that "it's too early". While I agree that games shouldn't be unnecessarily nerfed, especially early in the games life, this is an exception to that. Well at least it's an exception to the "it's too early" part, considering it would be a necessary nerf. All the spin needs nerfing wise, is to make it easier to punish on block. Don't make the recovery ridiculous, just make it so that every character can easily punish it on block, like Kabal's spin in UMK3.
Now, if you disagree that it shouldn't be easier to punish, explain why. Don't just say "it's too early", or "you're just crying" etc.