Doesn't seem to be much different than my experience with the difference between an OS X boot, and a Windows boot.
If you ask Apple engineering again - you may want to know why the Option-boot (if the problem is a lot of wireless network) why the difference between OS X and Windows.
I have anywhere from 6 to 20 wireless networks visible from my location, and doesn't seem to affect a Windows boot. I get closer to 30 seconds, if I wipe and install Windows, but the timing continues to get slower to around a minute after a few uses.
Yours doesn't seem too far out of normal, at least in my experience.
My timing here (MacBook, 4GB, 250GB HD with 60GB Windows XP Pro partition) shows about 15 seconds for OS X, and about 60 seconds to a usable Windows system.
note - goes to the Windows start icon within about 10 seconds at the most....