Umm, I've had it for a while so I don't really know - I have a 3-geared hub gear.
(I can honk it up Dundas Street and Market Street but I do run and do triathlon (on another bike!!!) as well so I'm reasonably fit with a decent power-to-weight ratio.)
So pretty much the opposite of my physical status! Glad to hear you can get up Dundas Street though, that's pretty good - have you tried Queen's drive around Arthur's Seat with it? There used to be an Arthur's Seat challenge and although I tried it with a road bike (3:17 since you ask) and a unicycle (5:54) I do wonder if anyone tried it with a Brompton...