Single or Dual Pattern Cam

If you have a good exhaust ports like most aftermarket headsI feel there's no real advantage to a split pattern camshaft. Actually I've seen a trend in tightening up the exhaust side lobe separation in a lot of new race performance cam grinds and circle track grinds. A split pattern is only trying to compensate for a week exhaust side. It was a hot subject and many were convinced that a split pattern was more modern and would produce more power, marketing jumped on that and produced a lot of new split patterns because people were buying them or should I say buying it. Jmo