Doesn't look that much different from GOW 2018 in most aspects.What makes you think that GoW is DLC or cut content from GoW 2018?
it's an issue most sequels have these days. it's hard to really tell the difference if im being honest. maybe if you've beaten GOW 2018 it might be new content, but for me as an on looker it doesn't look much different. I had the exact same reaction when i saw BOTW2 unveiled, same reaction when i saw Miles Morales, same reaction for a lot of these sequels honestly.