Is 310 torque at lower 1750 rpm better than higher torque 342 at higher rpm 6200 on a car?

Is 310 torque at lower 1750 rpm better than higher torque 342 at higher rpm 6200 on a car?
It depends on what the car is being used for. The 310 at 1750 would be better for stop / start traffic, and most "real world" situations.

342 at 6200 would hardly be used unless you were driving a race car. (Or enjoy revving out your engine every gear change).