Yes, this is exactly what happened. The Marvel comics were mostly colored (and slightly edited, I think) reprints from DWM. I imagine the colorist were really excited when they moved on from Four to Five. I keep looking at that scarf and imagining having to recolor it in every panel, agh. Anyway, there's also a lot of Marvel-specific material - covers, and stuff from the letters column and so on. But the comics are all originally from DWM. Sorry that you were confused!