I'm sorry for coming across harsh, I guess I didn't know where you were coming from either. The reason I responded is that such a post creates ambiguity over the context of the scoring, so I felt the need to correct it.
I'll try to put it more in perspective. Right now you are enjoying Vega. Vega is a very unique iem because of the signature that results from the quantity of its bass. It sounds thick, powerful, and can be considered very engaging. However, it is also one of the most coloured signatures. As a result, it will always be very polarizing: some people feel it should be top 5, others at the bottom. But there's no doubt it can be considered a 'musical' signature. However, I can't judge iems based on musicality, because that only relies on subjective preference.
For instance, another example of a very different 'musical' iem is the NT6pro. Neither Vega nor NT6pro have a particularly accurate timbre, but are both very enjoyable. Therefore, they have a similar average signature score. However, the NT6pro is just a bit more precise overall, which is why it has a higher rank. However, there will also be iems with high signature scores and only average technical scores, and finally, iems with both.
I guess what I am trying to say is you are right that reference iems score high when it comes to performance; however technical performance does not automatically exclude a natural, fun, or 'musical' signature, rather we would like to see both!