Let them bring it on, whatever they do, we got lot people around us to find solutions. If you want to open your Apple hardware, change your MacBook Pro battery or gain access to the terminals of you MacBook Air, you can simply rely on the pentalobe screw drivers. When you are out of warranty, the repairs you can do on your own can be done with pentalobe screwdrivers and skip the need to pay what they loot from you at the Apple service center.
Now they have tried to make things harder and confusing for you, they simply used different sized screws in every device. You would need different Pentalobe Screwdriver Sizes to open your MacBook Pro or MacBook Air. The Pentalobe Screwdriver Sizes you need for your iPhone 4 is entirely different, they got you much smaller screw sets here. With iPhone, you would need the TS1 Pentalobe Screwdriver Size to open it up. And if you ever take your iPhone to their service center for any need, they are gonna change your case screw set to pentalobe. But good that you got different pentalobe screwdrivers of various sizes, lets you get back your access.