[cobrashoch]

Cranky - as per normal you ask a question that can't be answered even on identical builds, due to the parts selection longitivity. The answer to your question is measured at/in drag racing I suspect though. There's a reason top fuel engines are rebuilt after each run. Could they be built a bit stronger? You betcha! But that would mean less power too. So there in lies a possible solution to your question.
All engines regardless of make and demeaner are measured by intended use vs, the build factors.
Another thing. ANY engine that's rated at say 350 horses at any given spec. will continue to produce that same 350 horsepower regardless of how you drive it, be it hard or easy. This implys that a given build will have a life expectancy range factored in too. For example most Ferrari V12 builds have a street life expectancy of around 30,000k.
Remember, that 350 horsepower has the same amount of measured power regardles of brand name or size of engine. Period!
The upshot of this is, different racing versions will put different requirments on different parts of our identical engine. If parts failures are what you are looking at, then if we drag race maybe it's spun bearings we will see. Road course racing may see a rods wrist pin failure, on the street we may see valvetrain failure. It's all moot though. In the real world no racing engine is the same. Only stockers are built the same.
Your question, though logical, is agenda driven in my eyes. That's not a bad thing though. Just keep it in mind when you ask such things. That way you won't be coming back at me with other factors such as engine weights, mileage, revability, torque vs. horsepower and so on yati, yati, yata.
cobrashock