As tfox said, its more than likely the cables. The yokes on the cables have to be shorter on the right side(opposite for a left hand bow). Remove the cable and on the left yoke have NO twists, on the other side u should have at least 3 twists in the clockwise direction. Always twist clockwise. If that doesnt fix it than it may be the limb pockets not square or the limbs may just be wrong. Other than that i cant think of anything.

Just for the record, I LOVE Mathews bows, i own two. :-) And, again, as TFOX said, we shouldnt bow bash, everyone has certain characterisics that they like about there bow and dont like about other bows. Thats why that bought that compared to the other.

Anyway, try that on your limbs and see if it dont work.