Both suck but yes I'd say having severe DR than DP is much worse than vice versa. When I was feeling more dp'd, at least I was able to talk to people and connect a bit (it was only my identity that felt strange) I didn't feel alone much. but with severe DR, the whole world and people seem alien and like I don't belong to the human race anymore. I have both dp/dr but since the increase in DR, I've become awfully quiet, reserved, lonely, and really terrified of the DR sensations.