When I hover over two stars, it says "Meh. I've experienced better." With regards to Ginza, I've definitely experienced better.
I went there for dinner last night and had their sundubu. The banchan or small Korean "appetizers" that are served with the food was forgettable. The sundubu came with tofu (of course), pork, mushrooms, onions, zucchini, and a clam. First thing I noticed was that there was no egg... The rice that came with it was overcooked and soggy/sticky. That is definitely not a good sign for any Asian restaurant (Chinese, Japanese, Korean, whatever... even Orient Express has better rice). I found the sundubu itself to be on the bland side. Maybe they mellowed it out a lot for the American palate? I'm not used to sundubu's with zucchini so I first thought hmm, this could be interesting. Unfortunately the zucchini was cooked to a mush and completely unappetizing. The rest of the jiggae was okay; not spectacular but not terrible, but I would've liked a bit less mushroom and a bit more tofu... it IS tofu stew after all.
I'll give Ginza another try with one of their meat dishes, but until then my rating will be sitting at 2 stars. It's hard to justify going to Ginza when Oishii and Korea Garden are both right around the corner.