Evryone is entitled to their opinion, but from an engineering perspective, a PROPERLY DESIGNED roller rocker will have a constant ratio. The effective fulcrum length does not change. But, good luck finding an off the shelf rocker that is properly designed. The only way to get that is a custom rocker. If the pushrod side is not designed with proper valve side geometry in mind, then the ratios will not necessarily be constant because the lobe lift inputs will be inaccurate and skew the results at the valve.
If that is the sole reason to discredit my work, then I guess there are a lot of companies that shouldn't be believed due to the sketchy info they promote. Ever read the Harland Sharp website on rocker geometry? How about Comp Cams info on rocker geometry? If you want to read or watch videos on something that doesn't make sense, you might want to start there, and you can find a whole lot more. In the end, I stand by my assertion that a properly designed roller rocker will have a constant ratio, and you will never achieve that with a shoe type rocker. Even a poorly designed roller rocker will do a better job than a shoe rocker, or there would be no point in having a roller.
I'm not afraid to admit I can, and do, make mistakes, and I have been wrong before. But, to discount everything I have learned over the years, over one thing you happen to disagree with, seems a bit over the top, imo.
