I don't know if it is better, but given all the marketing around it, it certainly should be! Like you I haven't seen any proper reviews of the camera.
In fact the lack of interest in it, it having yet another Yuneec manual that looks like it isn't even fully written yet, lack of listings for the parts (in particular a spare ST16S controller for team mode) makes me wonder if Yuneec are just going to stop bothering about it, again.
I'm selling my Inspire 1 which I've used for photography and was thinking of getting the H3 as a replacement (with it being lighter and possibly fitting into the new C2 category we now have in Europe). Was wondering if I could also use to replace my H520 for mapping.
But, I'm also now considering jumping ship completely and using the Autel Evo 2 with 6K camera for videos and mapping.... I just like being able to use team mode with my photographer controlling the camera.