They're completely different monsters though 8n 4E. My preference is the same monster, same cliff, same obstacle, growth represented by ease of overcoming the challenge.
To me 4E at times felt like a treadmill with different paint job on my powers. There were aspects of 4E I liked, others I did not. This falls into the did not category.
But this horse is dead. There's nothing wrong with either way of doing things, I just have a preference.
You preference appears to be the "the same monster, same cliff, same obstacle, growth represented by" the same mechanics. I hear that preference.
However, 4e allows for the same growth "in fiction" from the character perspective, but the mechanics change to help model the fiction of this growth.
It's possible but I don't remember a huge range to monster stat blocks. Usually it was something like 10 levels max. So something starts off as Level X standards/Elites/Solo then Level X+5 they ratchet down, then Level +10 they become minions or something like that. And of course you don't have to use them across the whole range.
Certainly I think it would be more interesting to go from fighting:
Orcs
Ogres
Drow with Ogre minions
Dragons
Demons
vs.
Orcs
Ogres
Tough Ogres
Deep Ogres
Demonic Orges
Primoridial Orges
This paint job treadmill is not neccessary.