I think it's a comparison of popularity. The iPad market is larger than the Windows tablet market as a whole (which is mostly driven by Surface alone). More han

I think it's a comparison of popularity. The iPad market is larger than the Windows tablet market as a whole (which is mostly driven by Surface alone). More hands will see iOS implementations than Windows tablet implementations. Developers making tablet apps will most likely see more profits from their iPad versions than their Windows tablet versions, so iOS takes priority due to the sheer number of users in the market, not variety of devices in market. And so on.