Probably the fact that I know fuck all about literally all the names you just dropped and Tavern Tales is something I actually already know how to work with.

I don't know what floating around has to do with anything here, though, except for the setting. The setting has jack dick to do with any of the systems, Tavern Tales included, since it's [i]homebrewed[/i]. Unless if you mean those systems are just floating around. Then, I've never heard of them. Probably been floating well above my head this whole time.

But if you want to know what makes it different, click the link and find out for yourself.