Also, just for the lot of you that are still trying to figure out how this system works, I understand that it's a fairly harrowing wait, I'm there with you. However, I'm have two takes on the matter which help me get a good night's sleep:
1. Admissions decisions are very human-based and therefore prone to considerable randomness. Give the same pool of 100 applicants to the admissions committee on two different days, chances are the admitted class will differ. Therefore, there really isn't any point in trying to figure out and crack a system that doesn't exist in the first place.
2. The admissions Commitee isn't trying to dupe us in anyway. When they say that the alumnus interview isn't merit based, it's best to take them at their word. This is for three reasons. Firstly, the entire admissions process is designed to make the candidate feel comfortable and not play dirty tricks. I've never heard of a school who tells their prospective students one thing and then acts differently. That just reflects terribly on the school. Secondly, even if we are to assume that honor doesn't play a role (which it most definitely does), the admissions committee has no tangible reason to play games with us. They have a great pool of 1000 odd applicants whom they get to pick and choose from. Lastly, considering that they are the people who make the system, they're the only people who know anything about it. It's better to take their word for it then guess.
TLDR - Trust the admissions committee, it'll help you get through the wait. When they say that it doesn't matter, let's just assume it doesn't matter.
All the best guys, I'm sure everyone will be happy at the end of all this with the programs they're admitted into.