I think he was joking, but was making a comparison of what he saw in the picture of Montréal, to Vancouver (green bridge, urban park, tall buildings, water, mountains to the north).
I've noticed that at first glance in this thread it's often possible to mistake one city for another. I've mistaken Montreal for Halifax, Calgary for Vancouver, Toronto for Calgary, Hamilton for Winnipeg, Edmonton for Calgary; these momentary lapses of recognition always gives me a chuckle.
Yes, that one above is Montreal masquerading as Vancouver.