Yes u should be getting 70mh with 2x380.
Conf files depend on you own system, best to set up your own.
So my speed is correct.

70-72Mhs for two amd 380. Amd 280x is little better with ~80Mhs for 2 GPU , and as I see , it's better with founding blocks too.
Don't forget that the wolf0 miner has no inbuilt overclocking like SKminer does, so you will need to overclock your cards before running it. This makes a significant difference.