Arrow are more important than the bow. You cannot tune the bow if you have bad arrows.

If I had to rank importance it would be the shooter first, then the arrow, then the bow. If you have bad arrows you can't tune the bow, and if you can't shoot well you can't tune the bow. However I have seen good shooters shoot amazingly well with out of tune bows and underspined arrows.

And when we are talking broad heads the arrow is even more important. I bet alot of times when people have trouble broad head tuning a bow it's either a from issue or an arrow issue, not the bow.

Paul