You were comparing London (huge metropolis) with Sydney (another huge metropolis).
Those data points aren't really as different as you seem to think :)
Sydney certainly didn't seem like a 'metropolis' when I was there :) But seriously, Australia in general has poor internet bandwidth, by dint of its limited transoceanic cables, so I thought it was a fair comparison!
200MB takes around 1hour to download where I'm living.
I don't think people believed I wasn't trolling. Sorry.