Great argument for 1.04 Yellow stance by MrCrusher. He is the first to make a valid point that doesn't include the words "spam" which should not be an issue since the Mos is designed for above average players.
However, blue stance in its very nature is a purely defensive stance and really shouldn't be used for attacks. It doesn't have any reach to speak of, and causes very little damage. If you use blue as a counter punch it can be used to great result.
By drawing these lines of comparison you are forgetting one very important factor, you are not taking into account the effect of ProMod blocking to a 1.02 attacking system. We know blue is useful since it can counter after blocks, but you could do that in 1.02 so we don't know what blue is capable of in that system.