According to Cringely "Apple has no peer". I guess that depends on how you look at it. Apple's execution is unparalleled, but the broadness and disruptive nature of Google's strategy is hard to deny. The new Android Open Accessory Development Kit strategy, for example, is something I'd never expect to come from Cupertino or Redmond.
Apple did announce the APIs for iPhone accessories a year or so back with iOS 3.0. Scope and traction of Google's and Apple's specifications/APIs might vary.