My experiences so far:
On WooPlus which I installed 3 weeks ago I had 7 likes by real accounts, with 2 I matched and wrote, at one she lost interest after 4-5 messages, the other one got bored for me personally, 2 others I matched never replied back and the other 3 weren’t interesting for me for different reasons.
On Tinder long time ago I matched with one but also here I was the one to unmatch because she seemed boring to me as well.
On Hinge at least here BBWs doesn’t seem to exist, haven’t tried Bumble and Lovoo yet.
I‘m 1,78 m and 125 kg, so can consider myself as BHM and yeah I haven’t bad photos. I also made a clear profile with good descriptions describing my activities shown on the profile pictures.
The only problem of WooPlus is the mass of inactive profiles and that in countries like Austria they aren’t well known, for the rest I think it isn’t bad at all if you aren’t the average man who writes the typical phrases in description and chat and posts bad pictures.