Interesting. I find mine pretty good. Guess it depends what you're used to - in my case Clio's & Punto's previously, so I suppose that didn't set the bar particularly high in the steering department!
My Stilo was a 3dr diesel though, 3dr's tending to be sharper than 5drs, and the heavy diesel engine probably making it feel more planted than a petrol. Suppose that helped, as did decent tyres. Whether the Bravo drives more like a 3 or 5dr Stilo, sadly I can't say.
That would've been the old Delta's like the Integrale from the 90's. It's true that the Tipo platform was used for the 145, 146, 147 etc and I think it underpinned the old Bravo/Brava too.
However, the current Bravo and Delta are based on the Stilo platform, which was new for the Stilo and seemed dynamically worse than the old Tipo platform, but better for things like safety (even the Alfa 147 from 2001 performed badly in a crash compared to the year newer Stilo). Then the Giulietta has another new platform, which only has one small part carried over from the Bravo/Delta platform.