Both should have the same content (at least I don't remember adding new stuff), but the Amplified will only work if you have the DLC and vice versa
The Amplified version of my Witcher mod however has a few extras compared to the original

You can't imagine how happy it makes me to see a Dark Souls mod , I miss something if I only install this amplified mod or it has the same as the normal one but adding the new content?