Welcome ferratagirl.
Weather, air & water temp, black flies and skeeters...all virtually identical. Quetico and Algonquin are about the same latitude. Terrain is similar. Fishing is generally better to much better in Quetico. Bears are more of a problem in Algonquin, IMO, because they've had more opportunities to figure us out.
Take the time to explore this entire website. There is a wealth of info if you're patient, polite, and willing to dig.
WiF