You miss the overall point - someone can be just as productive on a MD101 as they can on a new rMBP. As I wrote, the new rMBPs offer a different set of advantages and disadvantages, nothing more. There are workplaces to which I cannot take a rMBP because it doesn't have ethernet and the Apple dongles have not been approved by security.
One certainly CAN compare Air to Pro - people here, yourself included, do it all the time. To claim otherwise is absurd.
You clearly have a preference for the rMBP. That is certainly your right, but to build your claim by attempting to trash the MD101 reduces your credibility. Rather, acknowledge that you recognize the MD101 for what it can do and state your preference for a different machine. And if you're referring to three year old technology, specify that from the beginning - your arguments are shifting as different facts are pointed out.
One certainly CAN compare Air to Pro - people here, yourself included, do it all the time. To claim otherwise is absurd.
You clearly have a preference for the rMBP. That is certainly your right, but to build your claim by attempting to trash the MD101 reduces your credibility. Rather, acknowledge that you recognize the MD101 for what it can do and state your preference for a different machine. And if you're referring to three year old technology, specify that from the beginning - your arguments are shifting as different facts are pointed out.
You can't compare apples with oranges, or Air with Pro.
And also did you conveniently neglect the far better display, integrated GPU and also the PCIe SSD, plus lighter weight and better thermal design? I think it's safe to say that the retina display can actually improve productivity, because you can work longer on the screen without straining your eyes as much.
The non-retina display is already beyond shouting distance alone. And so is the integrated GPU.
The 3 year old technology part largely refers to the non-retina display, SATA3 interface, SuperDrive and the weight. In raw CPU performance it may be similar, but in all other aspects, there's no contest.