The Droid X is most certainly MUCH more in focus at that point than the iPhone is. While you are correct about similar fields of depth, you're not considering how those fields of depth change depending on where your focus is. If you're as familiar with cameras as I assume you are, you also understand that as you focus closer and closer, that field of depth decreases much more significantly. It works exactly like it does with your eyes. Go look at something 10' away - stuff that are 8' away are pretty much in focus too. However, if you look at something 10" away, things only 14" away are very much out of focus. And in these photos, the Droid X is focused closer to the camera than the iPhone is. As such, the Droid X photos will go blurry much faster than the iPhone photos will. If they're focused on the same spot, then let's talk your argument. But I'm not even going to argue with you about it because I have no argument about it.
As a morbid analogy, you're worried about a stubbed toe while I'm worried that the foot that the toe is attached to is severed from the leg! It doesn't really matter whether the toe is stubbed or not, that's not the most significant problem!
Okay, a less morbid analogy. Go find somebody who has comparable eyesight to you (simulating the similar lenses that you're claiming). You hold your finger 10" away from your face and have them hold their finger 12" from their face. You know who will have objects that are 14" away more in focus? This is the exact same thing!