I was a sales manager back in the day at circuit city. we were INGRAINED that you NEVER disparage another vendor/product. if you can't sell on why our product was better by showing features/advantages/benefits then you were canned. bashing others is a sign of a $hitty salesman that doesn't know the business/competition.... if you know what you are selling and are the subject-matter-expert as you should be, you know why yours is better and you can point out why the moomba they are sitting in is better than the axis without saying axis is garbage. axis does have benefits over moomba and vice versa.

my opinion but I've walked off car lots when a salesman starts down that path. I have come back later to see a different salesman.