Basically You don't need to know torque chart if You know power chart. It's all in with the benefit that power unlike torque doesn't change through gear ratios (not counting mechanical looses for simplification). What You need is that the area below power curve is as large as possible in rpm range You use. Than You don't need to think about torque chart.
I made a very quick estimation how the situation could look here. Blue area is power available in S2000 2.0NA in usually used rpm range. Orange area is power available in S2000 1.6T in usually used rpm range. You can see that the higher torque of 1.6T virtually brings You benefit over the high-rewing 2.0NA only in so low rpm which are used in the 2.0NA S2000 for only a fraction of time. Mostly in first gear corners.
http://www.ulozobrazek.cz/images/400Comparison.jpg