Mine has no power steering so can feel pretty heavy under cornering load. Others have differing levels and types of PAS. Then there's the steering geometery. Suffice to say not all cars are light to drive.
g25 spins much quicker than its predecessors, though granted you need to give it a helping hand if you are countersteering. You can't let it whip back to centre, catch it and turn it, however you shouldn't need to in racing unless you are show boating.
Its not so much the strength thats the issue for me, its the fact that there is very little information coming back through the wheel to help detect what the tires are doing.
I think some of us are comparing it to sims on the pc where we have become used to a particular type of feel for feedback. Turn into a corner and you will feel a certain degree of resistance, push it past the slip angles and the steering will lighten up as the tires lose traction.
Perhaps we are talking more about the variance in forces rather than how heavy it is?