Are Force mufflers (Summit catalog) same as the V-Force mufflers?

Are these the same mufflers? "Force" & "V-Force"?(PICS)

I think everyone gets these confused. In the Summit catalog are "Force Pro-Series" by Force Automotoive & the other one I see a lot of people talkin about is "V-Force" made by Pro-Flow. I always thought they were the same Here's the links below & maybe u can tell me if I'm wrong:
http://store.summitracing.com/egnsea...700+315310+115

http://www.forceautomotive.com/mufflers.htm

http://www.flopro.com/VForce.htm