No, you are missing the point. Apple didn't switch to ARM v7 simply to add a bullet point. It let them double the performance of the A7 vs the A6 without doubling the cores or the clock speeds. That avoids heat issues. They refined it even further with the A8. ARM developed v7 specifically in anticipation of the move to 64-bit, which they thought would start with servers, not phones. It would have been pointless for Apple to create a 32-bit version of ARM v7 since they would eventually have needed to move to 64-bit.
If all you are worried about is memory addressing, you can add registers to a 32-bit processor. Heck, Intel did that back in the 16-bit days (which is why the 8086 and 80286 could access 1MB of RAM even though 2^16 is only 64KB). They just didn't do that with their 32-bit chips, which is how this whole myth that 64-bit is useful only with more than 4GB of RAM got started.