| It likely has to do with your bass setup. Is your low string an actual B string, or is it something else tuned down? If it is a B string, and the others are tuned down, perhaps the B is tighter, therefor more responsive. Also, take a look at your pickups and see if the bass side is higher than the treble side. A few millimeters makes a big difference in response. Try lowering the bass side, or raising the treble side. | 
