Bench press is most important when you consider your body weight vs. your max bench weight. For example lots of law enforcement agencies require you to take the cooper fitness test. To pass the benchpress portion you are expected to bench 80% of your body weight. So by that measure for you to be benching 150 and only weigh 120 your doing damn good. As was already mentioned though, being able to do reps with your body weight I.E. weighing 120 and benching reps of 120 is still a better measure of strength.