Scenario 1: I assume APU inop, right? and why would you lose the flaps? u still have number 1 green EDP.
Scenario 2: I'd say yes, you have to do the multiple failure calculation. Apparently, Airbus says it is so unlikely that you have an ELEC EMER without at least one EDP that that scenario it is not covered in the summary, and since in the performance there is no difference between the EDP and no EDP cases, I guess they did the same for the performance.