Show them both.
If you've been around a while and have a lot of posts, you were either useful or not as spammy to the point that you got banned.
If you're new and have a lot of posts, you're spamming or possibly really involved in some project, but most likely spamming.
If you're old and have few posts, you've lurked or left and returned.
If you're new and have few posts, you're normal.
This is how it was done in VBulletin, and would make the most sense. As for allowing General Discussion posts count, don't ask me. It was a much more active forum before SMF and all the changes, but it also had the overheated personal attacks, but it at least had a page of new threads a day, most decent.