Tjuvholmen in Oslo, Hammarby Sjostad in Stockholm, Hafencity in Hamburg, the Dublin Docklands, Puerto Madero in Buenos Aires, Canary Wharf in London, Potsdamer Platz in Berlin... I could go on
Canary Wharf is a popular place for Londoners and tourists? (well loved?)
Come on, get serious! It is a business district, like any other business district. Few tourists or Londoners go there to hang out and enjoy. Do a search of London's best districts or tourist areas and it does not come up on any top 10 lists. Canary Wharf is the only place I've been to, of the ones you mentioned, so I can only comment on that one but I saw little there that would appeal to anyone other than the people working and living there. I saw nothing beautiful, interesting or charming. I'm sure most Londoners would agree and not put it in their top 10 districts/neighbourhoods.
Now for the others, I'll have to use Google Street-view & Youtube to check them out. (but I will check them out)
My whole point is, what most of the architecture geeks on UT appreciate and what the rest of the world appreciates, is usually quite different. The buildings and places in the world that people really love, look nothing like the minimalist utopias many of the architecture experts on Urban Toronto favour. I know, the experts always think they are right and anything that includes art, is considered "fussy" or a useless decorative do-dad. What many don't get, is that art and decorative features actually appeal to people. Charm and colour are not dirty words. (grey spandrel is, to me anyway)
Southcore is not a disaster but it's not what one would call charming or even animated, well, besides the train park, which is pretty charming. (and cool) It's one of the few features of this area, that actually puts a smile on people's faces. Hopefully the newer buildings (Ice & Delta) will help animate this area, once the retail opens up.