Both polls are complete failures, because they're internet polls. Something anyone can join in. Yes, Fire. Your poll had nothing restricting unnecessary votes, such as spiteful Playstation fandom. Something people can easily ignore as well. The only way to figure out a result close to the truth is to just go to several stores. Find people browsing the 360 titles and ask them. Put them on the spot.
You needed a gamertag to vote in the poll, if it didn't have any validation I wouldn't have bothered mentioning it.