Larry Dignan for ZDNet:

Apple took direct aim at Nvidia’s Tegra 3—a processor for a new batch of superphones—as it launched its latest iPad. The problem: Apple showed a chart with 4X the performance of Tegra 3, but provided no benchmarks or footnotes. … Ken Brown, a spokesman for Nvidia, said that it was “certainly flattering” to be called out by Apple, but the performance claims are sketchy without more data.

Nvidia’s invested a lot to convince Android hardware and software developers that its Tegra platform is the way to go for maximum performance for games and other demanding apps, so it’s unlikely to take Apple’s claims lying down. Not that the A5X is a design choice any Android developers have anyway.