Okay. What I suspected. 

The UW study is tainted. I suspected researcher bias and it turns out the research funding was cut off early by the city. I bet there's sour grapes in the conclusions rather than a clear picture of the impact of the minimum wage hike

The Berkeley study might be tainted as well, since its release was apparently rushed to head the UW researchers off at the pass. 

So, I'm going with we can't believe the results of either study. Therefore, we still don't know the impact of the minimum wage hike either way because no  credible research has been done. That's my opinion and I'm sticking to it.