So, I kind of need to pull you up on something again. (one of these days I've got to actually do a check on your scale -- and that of anyone else who has a scale out there, for that matter -- to check for all the possible problem points at once instead of just intermittently pointing things out as they happen to come up, so hopefully once I get that done with we won't have to keep doing this, but I'll specially kind of have to be prompt with this particular issue because there are KOs involved)
Your scale does critical hits exactly as the game does, as far as I can tell; the problem is, the games don't function on the same numbers or time scale as ASB does at all, so applying game mechanics to reffings without adapting can lead to aberrant numbers. Critical hits are a fine example of this -- they rapidly become very likely to happen because increasing your crit ratio in the games costs valuable time and even as much as 50% odds on critting isn't very good, being that you're not so likely to get both enough turns to set that up and enough turns to land crits reliably with it. In ASB, you do have that time, comfortably so, so the ratio increases in steadier increments, to the point that it's extremely difficult to get it to 50% and you can't even go beyond that.
But the probability is just a hypothetical example of what might go wrong. The damage, on the other hand, is a bit of a different story. The crit bonuses you're currently applying increase with other, unrelated factors and can easily overshoot 7%, which are both things that the official damage scale explicitly says shouldn't happen. Not that I'm saying the official damage scale is gospel under all circumstances, mind, but the official damage scale was built to result in numbers that work for ASB, hence, the restrictions are there for good reasons; whereas the in-game damage mechanics were definitely not built to result in numbers that work for ASB, so, there's no justification for applying them in ASB intact. If you're going to do something different from the official damage scale, it should at least be something that was also specifically made with ASB in mind (and to be frank, I can't really imagine a different way from the official one actually working for ASB crits at all). The alternative to this is getting numbers that are too high for ASB.