It's worth mentioning that last year's Google I/O featured some intense competitor bashing from Vic Gundontra that actually did a lot to strengthen the Android brand, and cemented its status as the primary anti-Apple underdog (now uberdog?).
I think any harsh remarks from Steve Jobs at this event should be viewed in that context, and are a reflection of the overall shift in tone between Apple and Google. The sniping is probably good for their brands and for their 'brand advocates,' who along with the press are really the primary consumers of Apple Event streams and Google I/O conferences—the people discussing this shit ad nauseaum in forums and comment flamewars.
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