My son lives 3 miles from me,we both applied for the same citi card and received different pulls.I have used creditboards, however use it only as a guide.The only issuer that seems consistent is Barclays,they use transunion. Most people that have done any churring will have many pulls on Experian and Equifax. If you have a chance to compare you credit pulls with anyone in your community you should see they are all switching constantly.This was not true 12 months ago.If you apply for a lot of cards it would be great to spread these pulls out over all three. I can't find any method to predict where a pull will hit.