^ yes, i focus more on torque curves for off-the-line response. the G70 peaks at 1400, the 330i at 1550. with a turbo the curve is usually quite flat until ~4500 where it starts to drop off and which is where hp tends to peak. so the area under the curve should be comparable - except the 330i has a 13% peak torque advantage.
So yeah, here's the graph of torque and hp curves (assuming this site is reasonably correct):

You can see that the torque looks very different and that flows through to very different hp curves, even though the peak HP is very similar.