A few weeks ago at Google I/O, they were also doing live demos in front of a large audience. An employee was demonstrating Google Now (a voice command contextually aware search). The demo was real, live, running on the laptop she had at the podium. . She was a little nervous at first - saying "I've never tried this in a room with so much ambient noise". She spoke the search queries and it worked perfectly and smoothly.
Another demo at that presentation was playing a multiplayer game (Riptide 2) with android devices. Unfortunately there was some network error and they weren't able to connect the three or four tablets, and had to skip that demo. (They later fixed the issue and the game worked great in private demonstrations)
To me, this contrasts so sharply with Microsoft's exec grinning at us all, telling us how great it's working. This is why Google is awesome - no lies, no smoothing over technical hiccups, just great programming and Do No Evil.