Your test is a bit unfair.
I got the EM1 for 3 weeks and the GH3.
First of all we clearly see on your images that the GH3 is way more sharp, and I saw this in all my footages. The post sharpening is not cool, and alter the quality. On the portrait image you have done, sorry but the image quality on the guy face almost looks like on my iPhone. I get better result with the GH3.
Secondly, you forgot that the GH3 has 60fps which is as important as stabilisation for me.
Thirdly the cost, I bought my GH3 new, at 806USD including taxes 1 month ago.
Finally, you say ergonomic is better on the EM1. Sorry but I was before a canon user, I got the EM1 and was lost, and then the GH3 everything was amazing and better than canon and olympus. I way prefer the ergonomic on the GH3, so this is something personal, but they are on the same level anyway. Except something you forgot again to mention, is that the GH3 has a screen that can turn in every way and this is absolutely fantastic and changed my life when shooting !
So on my side I wait for the new alpha sony cameras (which will probably get good video and 5 axis stab but unfortunately big DSLR body) or that finaly a brand can gives us GH3 video quality (with .mov for friendly editing + 60fps) + sony A7 still quality + EM1 stabilisation in a compact body and at a decent price (1500 usd max). If this comes out one day ..... my dream will become true.