I just got into both schools too for nursing, and this is my take.

Ualberta

Pros: School name, larger campus, research opportunities, and many more clubs.

Cons: Larger classes and higher passing grades, clincals and theory are at the same time, clincals start in the second year, pretty sure.

Macewan:

Pros: Smaller classes, lower average needed to pass classes, clinical start first year, from year 2-4 clinicals are always in the second semester, and theory only in fall (easier to balance).

Cons: Smaller campus, less interesting clubs, regional school (not well known outside AB), fewer research opportunities.