Why not look for it yourself? There are lots of sites out there that compare cameras head to head. There you'll see everything you need to know. What those sites won't tell you however is that no matter how many differences those dSLRs have, you will still get the same picture.
Can't YOU do the comparison YOURSELF? IF you cannot, then ask the salesperson to explain the differences to you, that's what he gets paid for. You know what happens to those who don't know how to ask a question with politeness? They get misinformed... deliberately and on purpose.