If you have hoppers, it's almost a moot point because it's so easy to go back and forth between them. If you don't have EE, then go the park that doesn't have it, at least for RD. Pre DCA Saturday was always the worst day to go to DL. Now, with DCA in the mix, I would imagine that DLR, as a whole, is busier on Sat than on Fri - as a general rule of thumb.
Resort CL is usually calculated as the average of the two parks vice the sum; I don't understand your cross-park math. What I get from your CL numbers is theis:
Fri: DL=2; DCA=3; Resort=2.5
Sat: DL=4; DCA=6; Resort=5
Regardless of which park you visit, the crowds are going to be smaller on Fri than on Sat. I would definitely do DL on Fri and DCA on Sat if I didn't have hoppers. Even with hoppers, I'd start my day that those parks, and then see how it went.