I think it's just easier for some people to "arch" than others. For myself I've tried everything to keep the arch yet keep the butt on the bench which as we all know has to be there in competition. Even tried laying on a PVC pipe to get used to arching the back which was nothing short of torture. Perhaps that's why companies like Titan added the flat bench shirt to their line. I have other equipment from Titan Support and have to say they're a first class outfit with good prices as well.