I doubt it. When they talk about performance - they always said it in terms of compute/watt. In absolute numbers these CPUs and GPUs will still be less performant - just my guess.
On top of it for a foreseeable future I think a lot of professional software will stay on x86 architecture simply because most of it must be also available on Windows.
I'd agree, but Apple's position with the iPad likely will ensure enough professional developer mindshare? Most enterprise apps I use typically have a fairly built out version for the iPad (and most only support Windows otherwise). I agree that developers themselves will likely stick with x86 architecture to write code on for the most part given that's what servers will run.
On top of it for a foreseeable future I think a lot of professional software will stay on x86 architecture simply because most of it must be also available on Windows.