Being as I've had neither, I haven't cast a vote as I don't think I'm qualified to do so but as an independent observer and from feedback and "musings" of all the comments I've heard for both air rifles over the years, including maintenance and physical asthetics, I'd probably go for the Weihrauch.
My local air rifle club uses a number of HW 100's as Club Guns so I have to take that into account also.

I'm not a great PCP fan these days, but I maybe might in the past, have gone for the HW100 possibly in a sporter stock (although the T'Hole is an Ambi and I'm a southpaw) but the right handed cocking lever always deterred me as on the AA 510 series being a lefty like.

So, Yeah, the Weihrauch for me !

So I may as well vote now !