Thanks for the easy to understand lay out. I guess I was a bit mistaken. Having said that, it's because of the Big Bang engine that they probably came out with this for the street. My understanding of the Big Bang was the engine fired 2 cylinders within 70˚, then a long pause. I didn't realized that it was all 4 within 70˚ then a very long pause! That's why the RC30 doesn't really qualify as the big bang, but as a variation leading to it.
Thanks again for shading some light!