I highly doubt that many people are making there gear choices based on the warranty. My experience has been with most photo gear that if something is going to happen it is going to happen within the first year.
From Canon Canada
For U.S.A. & Canada Only
Your EOS Digital Camera , when delivered to you in new condition in its original container, is warranted against defects in materials or workmanship as follows: for a period of one (1) year from the date of original purchase, defective parts or a defective EOS Digital Camera returned to Canon U.S.A. or Canon Canada, or their authorized EOS Digital Camera service providers, as applicable, and proven to be defective upon inspection, will be repaired with new or comparable rebuilt parts or exchanged for a refurbished EOS Digital Camera, as determined by Canon U.S.A. or Canon Canada, or the authorized EOS Digital Camera service center.
From Canon UK
1. Warranty period
This warranty is valid for one year from the original purchase date of the new product (three years in case of projectors), as evidenced by the above mentioned documents.
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Irrespective of what someone may say I would say to believe what you can see in print. Thus 1 year. I hardly ever look at the warranty card and simply file it away and register everything online.