I checked out the two links. They both appear to be "flat" style forums. DPR's threaded view is very powerful - it allows you to work through sub threads and asides that develop organically within larger threads while ignoring other side branches you are not interested in; and it quickly allows you to see new posts in those side branches. Flat forums are ok sometimes for rapidly scanning posts without the need to click but very unwieldy in large threads. Not a lot of modern forums pay attention to threaded views, it's one of the best features of DPR.
One change that I would like to see is the ability to preview and edit a post before posting. With DPR I often find myself in the middle of re-editing a live post, then finding it blocked because someone beat me to it and responded before I completed my edits. I'd also like to be able to select and embed multiple images in one go rather than one at a time.
For a long time, our forums have provided two views: threaded view and flat view. We completely understand how valuable the current threaded view has been, and we know many of you have grown used to navigating conversations that way. In fact, I prefer the threaded view myself.
Interesting fact: The majority of DPReview forum users actually use the flat view. I realize that's not helpful to those who prefer threaded view, but I want to provide that perspective.