Do CRA's weigh hard inquiries differently? Surely an inquiry from T-Mobile or Direct TV do not count the same as an inquiry from Ford Motor Credit or Macy's?
For scoring, they are all the same, you may be able to explain them in a manual review (say recon) as long as you don't have a lot of them.
With the exception that multiple inquiries for an auto loan, student loan or mortgage within a 45 day period only count as a single inquiry for scoring purposes. Thus, you can shop for the best rates without fear of hurting your FICO score.