4.5m gp = 5.5m gp?

I don't get why people are so confused about this. Division = GP bracket. That's it. It doesn't mean you might be matched up against anyone in your division....you'll be matched up with people with similar rosters within your division. The person with the worst roster in the division (i.e., GP bracket) isn't going to be facing the person in the division with the best roster.