Hmmm, that's curious then. I just can't get HDR to look like that. I wish it did because I love that vibrant look of the trees, sea and sky. I never quite exactly get the sky looking that bright blue, it's always darker blue for me.
The HDR setup is very good in Sot, I would just double check your colour space settings are on auto, if that isn't right it will cause some significant shifts in hue between HDR and SDR.