Power advantage between Ford 351, Mopar 340 and Chevy 350??

I was thinking (which I sometimes do) about these three similar displacement small blocks. I know they arrive at their displacements through different bores and strokes, but I would think they were somewhat similar. Here is my question. If you took each of these engines and installed cams with the same specs, used the same type of rings and bearings, installed heads with the same valve size and very similar flow characteristics, Installed the same intake (ie an Eddy Air Gap), the same carb, and basically the same headers, would the engines make pretty much the same power? I know there are lots of other factors. I am just wondering if all things were as equal as possible, would they make the same power? We like to think that our Mopar engines are the best, but I wonder which engine would come out on top?