They are very similar but the CVT will be slightly heavier because of additional material like the clear windows (which will get hazy over time) in the rainfly etc. But the difference will be minimal in weight. No real distinguishable difference in cold weather either. Add a Tepui Weatherhood though can add some insulation.
Thanks for the reply. It might come down to available colors lol. Last I saw CVT's version was kind of a limy green color. I would like something more quiet.