If their ass is off the bench it's not a good lift in meet. Not sure where you are seeing this type of arch but it's not there. At every meet I've attended both as a spectator and compititor the men don't usually have that much of an arch. It's usually the women who can pull that off, but there are exceptions. Any arch at all that I do see is a product of packing the shoulders into the bench and squeezing the blades together resulting in the chest rising.
Hell of a bench press. Mind blowing anyone can hold that much let alone bench it.
