There are times when a broadhead will expose tune issues that are not revealed by a field point. That exposure indicates that the tune is off a bit. I would choose to address the tune issue so that I get the arrow flight I think I will get whether I am using a broadhead that has two blades or three blades.
I recently lowered my front end weight by 25 grains to clean up the tune on this year's bow. That cleaned up a tendency to have unexplained flyers. Of course, the unexplained flyers had an explanation that I finally figured out. Tune contributes a lot to accuracy.