"most smartphones don't have the accelerated graphics to run the software."
Its worth a mention here that, it is well known that HTC had failed to include a driver in its handsets to use the graphics acceleration functions, as a result, all HTC made windows smartphones (and most smartphones in general due to HTC being the biggest maker of Windows smartphones) can't use accelerated graphics fuctions of the same level of the iPhone.

i do not know if this is still the case with the TouchFlow 3D based windows smartphones.

i remember watching a video once about seadragon/photosynth
a quick search reveals:
http://www.videosift.com/video/Seadragon-Photosynth-demo-from-TED

1st post!

Go Apple!