Drop Rate Rankings

I was thinking about this last night, and this is how I would rank the campaigns from highest to lowest pink drop rate. What do you think, and how would you rank them?
Skeller Krunch
Frozen Nightmares
Alien Oasis 2 (Any pink, so Plasma Counts)
Lost Expedition
Alien Oasis 3 (Any Pink, so Fate/Fortune/Destiny count)
Swamps
Balefort Castle
Fathom Crypt
Balefort Sewers
Alien Oasis 1 (Current State, pre-nerf it was up between FN and SK)
Shadow Caves
Dark Forest
Forest Haven

So any thoughts on what to swap, or you think this is about right?