Does Canada differentiate between the two(transit and visit)? The way I read it Visit and Transit was the same process, I have never transited via Canada so cant say for sure but you still need to go through immigration like everyone else. When you enter Canada from the the US you are harassed by Canadian immigrationa (at least suspicious folks such as me are) and when you enter the US from Canada you are harrased by US immigration.

I guess I am just curious why people would think the process would be "better" via Canada as it seams to really be the same as the US process.

Edited to mention that I agree with monahos's statement on the US visa process. I may wife being Thai I painfully understand that but depending on the nationality of the OP could be a different topic...I do find this a curious topic and am trying to get more details than anything else as it does affect my travels quite a bit as well.