From my understanding, they are treating your second degree as another 3rd and 4th year. Meaning they'll have the same requirements as if they were your 3rd and 4th year in a normal undergraduate study. For Western, this would mean having to take 6 out of 10 courses in the fall and winter at the 3rd year level or higher. If at Ryerson, course levels are designated as 100, 200, 300 and 400 level courses. In each fall and winter academic year, you must have a minimum of 6 that are either 300 or 400 level with a minimum of 3.7 for each Fall/Winter academic year for it to count.
I'm in a similar situation. I graduated undergrad in 2011, just started studying in May and booked an exam for September. If I meet the cutoffs for UWO, then be it, otherwise, I'll be continuing my studying even after the MCAT as my main focus is applying next year, but it doesn't hurt to see my chances and if I can make it this year. GPA for top two years is 3.80, I'll be considered SWOMEN though, which will help in the MCAT cutoff.