I suspect the original post was referring to XCode versus Android tools, given the post context of Google I/O, and if so, the statement that the tools have always been better is definitely correct.
At least on OSX, I doubt anyone would dispute that XCode 4 in 2010 was miles ahead of Eclipse and early versions of the Android SDK, and that arguably holds to today, though less so with Android Studio.
I might be misremembering but the tabs in XCode 4 did not work like tabs in any other IDE - there were some major annoyances around new window/tab open behaviour if I recall it right.
This hasn't been the case since XCode 4, which was released in 2010 and introduced a single-window for everything.