2024 5th round LB Jaylan Ford may be an underrated gem in new Saints defense

I have a question, and hopefully someone can help answer it.
Demario Davis is a MLB in a 4-3 system, what are the differences in a 3-4 system. Wouldn't you just technically have two MLB? Why is that such a difference for the MLB in each system? I would think it would almost help, no?

Thank you in advance.

It really depends on the type of 3-4. But just so you know, Staley's defense still uses a MIKE, which is what Demario Davis is and has always played in a 4-3. The differences are minimal so long as you have 3 guys up front who don't get shoved backwards in the run game.