There is nothing you can do about this, so it's completely unproductive to overthink it. And firms don't waste their time interviewing people they have no interest in hiring. I guarantee you that the firms did not put as much thought into the order as you are.
I believe their website states that they drop your lowest courses according to a sliding scale based on how many credits you have completed. In an e-mail with one of their admissions officers I was told that if you have completed 140+ credits, as I assume you have if you completed 2 undergrad degrees, then they drop your lowest 30 credits. Also, somewhere on the UVic forum someone has posted the actual sliding scale.
I would appreciate some feedback from people who have secured positions from recruit - should I be disheartened if one firm offered me an interview on the second day while another offered me one on the first day? i.e. are my chances of securing the position lower if I don't have an interview on the first day with the first firm?