From my side, comparing your results to anyone else's is a losing game — small thing, but it adds up. Are live granny cams a popular niche, and which site is best for them?
Having tried a few, a month is about the minimum before judging any platform — small thing, but it adds up.
If it helps, a first meeting in a busy place removes most of the problem — that has been consistent for me across a few different platforms.
Speaking generally, nobody's experience generalises, including mine — i would not have believed it a year ago.