Three Things
1. I am going to assume you used the same hardware for all of these tests. It would be nice to know what it was.
2. Since my Linux computer is a laptop, boot time is important, all the time. My Windows 7 beast of a laptop can be running in under three minutes, most days.
3. On the other hand, my Peppermint OS laptop, with 1 Gb of RAM and a sub 2 GHz processor, needs 30 to 45 seconds to go from black screen to ready to go. Adding OpenOffice adds about 15 seconds to the boot time over GoogleApps.