While the "Projects using Lazarus" pages all obviously also use FPC, I can see the usefulness of also having a meta page of "Projects using Free Pascal". Unless there are any serious objections I'm more than happy to leave the two meta project pages to co-exist so long as we don't end up with any significant duplication (the LCL category in the meta FPC page is fine).
Well, I think one should be a redirect to the Other.
Technically Lazarus is a subset, but if a user wants to look at this sort of info, they would probably expect to see the full content.
So I still advice the idea from my previous post. (merge, move, redirect)