Mmm, You need to be really careful here. You are forcing the dev to admit that one spec is doing more dps than the other... I don't think that is a fair question. What you are essentially asking for is a buff to X tree or if it is in the pipelines, and i think that detracts from the overall intention of the Q&A bioware have proposed.
You need to think about what it is that your concerned about, and from the above question it appears your concerned about a certain playstyle not doing as much dps as another.
Consider asking for more maths or inhouse numbers for your theorycrafting rather than if the devs "feel" there is a dps anomaly.
Something like - A specific hybrid spec appears to be quite popular at current due to higher dps. In your play tests, do you have any numbers that support this theory in comparison to numbers for lethality snipers.
This way you address the question, is there a dps balance problem between these specs that you are aware off, and gives them some room to be more specific or provide numbers.
Thanks these are great inputs imo!