For sure if you were truned down by CU for some hot majors and still it's possible for you to be accepted by some cool majors in OU. The following are the ranking from Maclean, which does this every year.
COMPREHENSIVE
Ranking Last year
1 Guelph 3
2 Waterloo 1
3 Simon Fraser 2
4 Victoria 4
5 Memorial 5
*6 Regina 7
*6 York 6
8 New Brunswick 10
9 Carleton 8
10 Concordia 11
11 Windsor 9
MEDICAL/DOCTORAL
Ranking Last year
1 Toronto 1
2 Queen? 3
*3 McGill 4
*3 Western 6
5 UBC 2
6 Montr獒l 7
7 Alberta 5
8 Sherbrooke 14
9 Ottawa 10
10 McMaster 8
11 Dalhousie 9
12 Saskatchewan 11
13 Laval 12*
14 Calgary 12*
15 Manitoba 15
From the list, it shows that CU defenitely is not comparable to OU in general. But it depends on your subjects and interests.