"I believe that Product X is best suited for my needs because of [feature 1], [feature 2], and [feature 3]. I also belive that Product X is manufactured better because previous products from this manufacturer have been of exceptional quality. It also comes with a 5-year warranty... none of these exist with Product Y."

Belief = faith is a different thing.
Belief = firmly held opinion, especially an informed opinion, is another thing.

If he believes that ED made the right decision and is using "belief" in the "blind faith, acceptance without proof" way, then I guess I'm giving him too much credit.