The most important element of fit is the comfort of being on the bike. the various formulas are fine as starting points, but how the bike feels when you pedal it for hours on end is the most important thing. Interestingly enough, my road bike is set up more than my touring bike than the other way around. I'm not interested in speed or nuances of efficiency, I bought the road bike not for speed but because it is light and has high end components. It is a pleasure to pedal, especially uphill. But it's set up with my bars an inch higher than my saddle because that's the way I like it. It's more comfortable for me to be more upright. As for the position of my knees over the pedal spindle, i've never given it much thought. I look down, things look normal, so I go with it. both my road and touring bikes are very comfortable to pedal for many hours. I've not measured anything with a tape measure. It all feels good on both my bikes. Ditto for my other two bikes as well, though I do not ride them much anymore. Comfort is the most important thing, not measurements or formulas. They are only starting points.