I am not sure what model of Golf you are referring to (Mines a Mk7) and on mine the steering has different settings where you can adjust the weight, from light up to pretty heavy. It does have a variable ratio rack too but you don't even notice it.
The Giuietta has an electric rack as well, but whether it is the rack or the suspension settings the Golf has better feel.If you were not told before driving it that it was electric you would never know....
With a few mods I think the Giulietta can be made to handle really well. Better than a Golf? Who knows, but I am sure you could get to be very good. I think the general suspension design is sound, but it is badly let down by spring and damper settings.
I've spent lot's of time in the MK 7.5. I've also owned an Audi S3 8V, while the VW steering is definitely more precise and accurate, , I think that it lacks more "feel" as an EPS systems, however this is subjective. I also prefer the manual gear box in this Giulietta over the Golf well. It feels a bit notchier and slick, though the clutch pedal feels too long.
Not many car's come perfect out of the box for me, with the exception of P cars. Probably the biggest and most challenging issue here is the drive train. I much prefer to buy a car that already has the drive train I want, as suspension tuning is much easier.
I drove the 1.7 QV, and it too is also a very boosty engine, unlike say the power delivery from the GTI 2.0 engine, or say a BMW N20 engine. I think it's just how these Multiair's deliver their power, a bit like the old JDM turbo engines.
I think the car badly needs a front LSD. I have just recently test driven the new Ford Fiesta ST which comes standard with a LSD and boy does it make a difference to the handling. I also had an LSD on my Mini Cooper R56, it really helps with mid corner grip and reduces some of that torque steer. The Giulietta is soo boostie, I'm getting too much torque steer during corners.