You bumpkins need to go to
You bumpkins need to go to the community college and take a Freshman class in Physics to learn the relationship between Horsepower and Torque. Acceleration is determined by torque at the wheel. The more torque at the wheel the more acceleration. The Colorado has 1/3rd more torque at peak than the Tacoma. However, this is at 2K RPM. At what RPM does the Tacoma create peak torque? Looking at Toyota's website - 4,600 RPM. So, it is correct to conclude the Tacoma will be at a lower gear ratio when operating at peak torque. Not having the torque curves of both engines it is impossible to answer with certainty which will accelerate more quickly in a "passing situation". Also depends what speed you are operating at. If both vehicles are in either first or second gear I know who I would put my money on, and it isn't the gasser. At higher speeds the Tacoma will more than likely have the advantage, but do you really want to be operating at 4,600+ RPM when you could be operating at 2K?