My new conclusion: first emg shows slower conduction, second doesn't. Both show fibrylations. I'm thinking: either one or the other is wrong, or demynylation fall into remission.
I have been bitten my massive numbers of mosquitos in Zika and dengue zone
Zika is proven by WHO to cause GBS, GBS can be mild and fits my symptoms in that case
Gbs is causing lower motor neuron lesion, upper is not involved according to examination

Should I push for GBS diagnosis? It makes much more sense for me, but maybe it's wishful thinking