Zealot- in case you didn't notice, those scores were the running tallies up to that point, not the points for that round. iPhone and Palm Pre got 1 point for the round, and as stated that's based off of Gizmodo's experience with them at CES.
Also the G1 does support multi-touch. It's not integrated into the OS yet, but third party programs have demonstrated its usage. Which brings me to my next point- how does the open source OS not win at developer community and development platform?
All in all this wasn't the best of tests- you're pitting an unseen hardware and OS in the Palm Pre against just an OS (Windows Mobile) and an entire line of hardware (Blackberry). It would have been a better and more consistent test if you were to compare one phone from each OS like Giz did, adding a Windows Mobile phone and a Blackberry of your choice and using only those. Of course, it could be hard to justify picking just one- maybe that's why Giz only used phones that are the only option with their respective operating systems.