I suppose you are using that Super Scale mode introduced in Resolve 15?
I haven't tried v15 yet and will not get to until 2 months from today.
But at 1:25 in your video, those hills in the background, edging from the overexposure. Could you try putting that sequence through ACR? Because, those Edge burning-artifacts is something I see a lot in Resolve. Especially Artificial light sources will burn purple/black at their sources or on or around anything obscuring the light source, generating this harsh digital burn. It personally takes me out of a story seeing those. Perhaps some masking and Colour Pickering could fix it.
On another note regarding Adobe vs Resolve, the colour engine in Resolve beats Adobe anywhere anytime, the looks and richness of the pictures coming from Resolve are so much deeper.
I basically see it being like this:
Resolve = Perfect Colour but bad debayering, because of that its hard to ditch the digital look.
After Effects = Okey'ish colour but the best Debayering, giving a clean filmic look.
For me its all in the details. Might not matter to others and most likely not to the end-viewer.
Thinking of getting Neat Video for Resolve, but I don't know how well it deals with bad debayering. Its incredible for NR and detail preservation.