Arguably. I look at it as equipment vs training vs organization.
The stuff can change, but it's even harder to change the way people think. And almost impossible to reorg and entire organization. And all militaries are very effective at making sure people think and behave in desirable ways -- kind of important when things start exploding around you.
So a response that might be advantageous for pushing across continental Europe isn't optimal for a chaotic beach assault.
You throw a Marine in the former, and they're still going to respond like a Marine.
The stuff can change, but it's even harder to change the way people think. And almost impossible to reorg and entire organization. And all militaries are very effective at making sure people think and behave in desirable ways -- kind of important when things start exploding around you.
So a response that might be advantageous for pushing across continental Europe isn't optimal for a chaotic beach assault.
You throw a Marine in the former, and they're still going to respond like a Marine.