Been doing some further testing and seeing some very strange results.
I took an old demo with over a million triangles and converted it to work on the new WebVR system.
First of all the visible differences are that the new one is blurry and shimmering due to some kind of AA going on, also the tracking seems to be poorer although the FPS is showing 89-90.
Now it gets really odd when you look at the Profiler: which says that the new version has a shorter rendering time than the old version but yet the old version seems to be performing much better?! Also I cannot be absolutely sure but it looks like the triangles reported by the new version seem to be lower than those reported by the new one (but that might just be my imagination
projects used for testing
the new one