Engine power comparison / question

[King951]

This might seem like a really dumb question, but it is something I think about a lot. I own a 99' GMC K2500 Suburban with a 7.4 454. It has plenty of power to spare and I use it mostly for towing. I also have my 71' C20 with a 5.0 307 small block that does fine as well. I always told myself if something were to happen to the motor in my 71 I would put a 454 in it. This leads me to my question.

Let's say I build a 5.7 350 and it makes 300 HP and 400 ftlbs torque. Let's say I also build a 7.4 454 and it also makes 300 HP and 400 ftlbs torque. Both motors will go on the exact same vehicle with identical drive trains / transmissions / rear ends / etc. Aside from the weight difference in the blocks themselves, would one motor still be technically stronger than the other? Another reason I ask is because when I look at a new Chevy Suburban, they come with the 5.3 making 355 HP and 383 torque stock. That's more HP and almost the same torque as the 454 in my 99'.

Something else leading me to this question in my dad's previous 02 GMC Sierra 2500 HD with a 6.0 engine. Great truck, made more HP and almost the same torque as my suburban, but the suburban would noticeably out-pull the 6.0 making the same numbers. Both trucks had the same 4L80E I believe, both trucks weigh about the same, rear gears may have been different but they are both 2500's so I would assume they wouldn't be far off. This was with both vehicles running 245/75 tires.

I feel as though displacement has a bit more value than just a number. I find it hard to believe having an engine that is physically larger doesn't provide some benefit aside from pure numbers.

I know different engines make there power at different ranges, so maybe this comes into play a bit?

Any input on this would be appreciated.