[Rusky]

The difference is that even if Google were to try to use those patents offensively against Apple and Microsoft, they probably wouldn't have much of an impact- Google's motivation was defensive, and they pretty much had to try for those patents.

On the other hand, Apple and Microsoft are /already/ having an impact on Android and these patents would only strengthen them- their motivation was offensive and they were the ones who inflated the prices just to hurt Google.