IMO the Bearcat's tracking is not that far off from the Excal, unless you are playing on Rookie mode, which further adjusts your shots. The gun placement was very different from the Centurion, however, since on the Bearcat the L. Tachyon cannons were bunched together with two on the left and two on the right, each so close together that it looked like one beam firing from each side. At least you knew that if one particle hit the target, the other on that same was guaranteed to hit as well (with the Centurion you might get only 2 of 4 particles hitting). The two pairs of guns on the B-Cat were very far apart, but the auto-tracking ensured that a ship wouldn't be able to evade fire in the middle.