The key is telling if the app works on PC or Android or both or neither. They're selling them from the web, on your PC browser. They have previously had a webapp store which sold games just for your PC browser. Now in this store, they use the word Android as well. So are the apps for PC, or for Android?
They still have that store. It just isn't merged with Play yet.
I don't think it matters what platform the apps support. Eventually I see there being a single entry for Plants vs Zombies, (for example) you pay once and can install the Chrome app, the Android app, or the Google TV app.