When I ride the 750 Breva I would certainly not call it fast, but I would absolutely call it quick and agile. When attacking urban environments the 750 is way more agile than the Norge. Diving and pushing through city corners and traffic the bike seems rather bored even when I am hitting my limits, it lets me know it can do better. I think on a circuitous route through town (given equal riders) the Breva would get to the bar a half a beer ahead of the Norge, but lets face it, straight line with stoplights the Norge will run away from the Breva. CC's win out in that bet.
Granted for straight line acceleration many of the tiny hybrids and vans are going to leave the baby Breva in the dust, but get in to the twisties or corners and the Breva is way more than capable.
You do have to use the gears on the Breva, this is not a musclebound torque machine, but then listening to it run up and down the gears is a great part of the fun.
Bear in mind that I am a 300 pound rider, so me on this "little" bike is not a kind thing or a pretty sight.
I would not hesitate to take the baby Breva on a coast to coast tour if the Norge were laid up. I would have to make judicious use of gearing though and stay within the limits of the bike. (disclaimer - I once did a coast to coaster on a 450 Honda twin)