I was just referring to your review, where you stated "In the Bokeh test, the 28mm wins easily due to a fast speed and a very close min. focus distance, throwing the background really out of focus. The 30mm is next with it's wide aperture, followed by the Tamron." That to me said you judged bokeh purely on which gave the shallowest DOF.
Looking at your samples, the 28 does have very nice bokeh. I don't know if it's better than the 30 or not, but it is very nice. And you are correct that the 28's super close focusing distance helps it if you use it for detail work.
I tend to use my 30 for people shooting, so the close focusing isn't a big deal. If I want to go very close, I can always pop a 12mm tube on.