I have owned mostly crappy old twin shock vintage bikes. I stopped counting after owning 30 motorcycles. I still own a W650 and a BMW R90/6. I don't have any experience owning sport bikes. I had a Speed Triple for a while, but sold it because I couldn't stay out of trouble.
Last Friday I rode with one of my friends who has a 2009 fuel injected Bonneville black with 17" sport wheels. It's my favorite of the four Bonnevilles (regular T100, Thruxton, and Scrambler) because it's the best handling and fastest to get up to speed.
That said, the Ducati just feels much smoother, faster, modern, lighter, better handling by far. The Bonneville is awesome, but the Ducati is better than it in every way. The only area I'd give the Bonnevile a better rating is using it on the interstate since it weighs more than 100 pounds more than the Ducati. That makes it more stable on a windy day at high speed.
The throttle thing is an issue which would be bad for a lot of people, but I've become smooth with it and I mostly ride around the city. It's totally a non-issue and now that I'm used to it, the bike actually feels a bit slow to me. Probably not a good thing for the health of my driver's license, but I have tamed the Ducati and am becoming one with it. Hopping on that Bonneville and trying to keep up with my friend once I was on it, he was taking corners faster and accelerating faster than me when I was riding the Triumph.
Don't sweat it. Unless you're too tall, I think you'll love the bike. The first week I had mine it was killing my ass and back, but I swear the seat and suspension have both gotten softer and I just cleared 620 miles tonight. I'm totally one handing it through town and back into the same riding style I have when I'm on my W650.. Total leisurely riding and gawking at people walking on the sidewalks, etc... The bike is great. The best way to describe it is having a bigwheel (like from childhood) again. It feels sporty enough, it handles amazingly, like a BMX bicycle, and it's super easy to ride. I am totally done thinking about buying a throttle tamer.
From last Friday. That's the bike I swapped for the night behind my Scrambler.