eating to be healthy is different because you don't really count kcals as heavily as BBer's tend to do and you don't take anything to the extreme (400+g protein/day etc). also for a healthier diet the types of foods are more important. for instance someone concerned with health might not eat as much tuna as BB'ers because of the mercury. then there are 'lifers' who always stay hypocaloric to try and slow their metabolism down and decrease free radicals and stuff like that which is believed to be the reason why we age and ultimately die.
there are quite a few differences, but unless you have a horribly set up diet as a BB it will be a very healthy diet.