The BP is designed for the medium/heavy condition, but will struggle a bit on the true heavy oil. As far as which is stronger, it depends on the lane condition, on Heavy oil, the terminator is a stronger ball by a couple of boards, but on a medium/medium heavy shot, the terminator is prone to rolling out where the BP doesn't and thrives, becoming the stronger ball on those conditions. The BP will be the more versitle ball, good from medium to heavy. It will struggle a bit on the heavy, but can be used with good results. I personally would recommend the BP or World Class Particle over the Terminator unless your on a true heavy condition. The WCP handles oil a little better than the BP, for whatever that's worth.