Is p3D as popular as Sketchfab?

I know, I am so late on these cool technologies! Finally had some time to get into this though.
I’m about to publish a model in Sketchfab. So far I love them. Then I learned about p3D too. I was not too impressed with their gallery. I didn’t see any category organization to browse the models. But also it just didn’t feel as dynamic, as alive.
Is it me or what do you guys think?
Is it worth being in both?

JDL