As far as I can tell the only bar is 42cm across all the sizes which tells you all you need to know about the thought put into the details around performance and fit. This is really a design showpiece more than a high performance aero design.
Regardless of the data being something that's easy or hard to interpret, i think pulling back the curtain a little and showing that a product was actually engineered with CFD and then that CFD was validated in a wind tunnel is critical to telling a believable story for a high performance aero bike. I think the Elilee Blize (the base version) is in the same price range and has done that whereas Sava has not.