How do you "know" Calgary is better? Just curious, as I find that to be an odd statement considering (as you stated) you don't know a lot about Alberta.
I can't speak to the 'Hat, but far as clinical experience is concerned, I would recommend you take a look at Mount Royal University (MRU). The U of C is my alma mater and although I went through the accelerated track program, my clinical training was very similar to that of the regular 4 year program.
It was an OK experience but I would have liked more clinical hours, I believe MRU has more clnicial hours/training in their program. Also, from my direct experience having students from both schools on my unit doing their clincials, it seems MRU does a good job training their students as their cliinical skillset/critical thinking seem to be a tad beter the the U of C's.
As for the notion of Calgary being a bigger city so you will see cooler stuff in clincials. That may be true for your final focus ( if you are placed in ICU, Emerge etc) but you wouldn't be missing out on anything significant by going to a smaller city/hospital.
In fact, I bet you would see a lot more interesting cases in a smaller city because
there are no big hospitals.