Hmm... Those maps are interesting, particularly Toronto's and Vancouver's.
In reality, downtown Vancouver is that entire peninsula including Stanley Park and the West End

.
And Winnipeg's downtown seems a little large to me... Again past Chinatown, should be cut out and the zone goes a little too deep west of the Exchange District.
Lastly, why wasn't Ottawa on there? Ottawa is larger than Winnipeg and it's the nation's capital (?).
But in all fairness, I am not trying to start any arguments. Just some observations.