Add to the mix the question of which has a heavier valvetrain, OHV or SOHC. The same amount of camshafts, the same amount of valves, the same amount of valve springs. The downside of SOHC is the slightly higher CoG and the longer cam belts (or chains) but on the upside it has less parts as there are no pushrods and thus the reciprocating mass indeed is lower, leading to less vibrations, less counterweights, and eventually a lighter and more efficient engine. There is a reason to why pushrod engines are almost completely gone nowadays in "normal" cars, OHC is better. Given about a decade of continuous development it would be better in those big V8 engines too but it's not done as it would take time and money and the current system works well enough. That's the problem actually, the "well enough" way of thinking prevents improvement.
One thing about rotating vs. reciprocating masses and which one is worse. Take a shot (the metal ball the big guys make fly 20+ metres in the track and field events) and put it on the floor. Make it spin. Notice how much power you need to make it spin at around 100 rpm, well, not much. Pick it up, take a firm grip and rock it back a hundred times a minute and forth again a hundred times a minute. I bet you need more force to do the latter.
So much for the technical lesson again. I think we now have realized that the V8 people will never understand how their engine might be inferior to something else, as well as that the non-V8 people will never understand how the V8 might be better than anything else. So let's stop this stupidity here, we're not getting anywhere. Towards a ban at most but I don't think that's what we want.