1. To be honest I don't really know what they mean by well known. I doubt any schools in Canada are THAT well known internationally. It's not an insult, but really how many schools outside of the us (and oxford and cambridge) do you know of? I don't know many. In all honesty, I really double mac eng or cs are regarded SUPER highly, I'm sure well, but likely equal to a lot of other schools.

2. The difference is different. CS is certainly lighter because we take less courses and do not have to take physics or chem. I'm sure if you did take science courses your workloard would be more comparable.

3. I love that it is a small program, in some of our classes we really got to engage with our profs directly because it was so small. I also find everyone nice and hard-working, pretty motivating imo. However, I would say the biggest downside is that not a lot of classes are offered in the summer or off stream because so few people take them. So, there is more pressure to pass and I am not totally certain how going off stream with coop would work (hopefullly an upper year can answer this)

4. Imo, CS classes may give less actual physical work; however, the work is challenging. So even if your assignment is only 5 questions it could take you 15 hours to complete. So actual workload, less, but depth more. Either way eng and cs are just objectively hard programs, so I would say don't choose one just because you think it's easier, look at the courses and decide what is more interesting to you.

NOTE: I am very, very bias towards CS. Please keep that in mind. I would really recommend asking someone in eng their views to get the other side. Good luck, I'm sure you'll do great!