An interceptor, such as the caldari "Crow" has a mass of 1,065,000kg. This is a lot of mass! With a microwarprdrive, it can travel at over 5,000 m/s. We'll use 5,000 for a nice round number.
When you calculate the kinetic energy of that much mass travalling at 5,000m/s, the kinetic energy is 13,312,500,000,000 Joules of energy.
How does this interceptor "Bump" another ship, causing it to bounce off and in effect releasing more than 13 trillion joules of energy and not destroy itself or harm the larger ship when a caldari heavy kinetic missile with only 1,000kg of mass and travelling at only 4,300m/s manages 182 damage?