I find it ironic that you accept all the oiling fixes that the pioneers figured out years ago, but you do not accept the explanation of what you are fixing coming from those same pioneers.
No one in this thread that i can recall has said that rod bearing oiling is a problem. It is main bearings and not all of them.
I agree that you will have some velocity with flow, but putting in that big pump in a "stock" system make it excessive. Even a stock engine restricts oil to the rockers with its timed system of pulse oiling. I have found out the hard way that the mains will not pressurize properly without that restriction.