The be all, end all, final straw of a "good" rifle vs. a "bad" one. Thread after thread, accuracy wins. Light rifles, budget rifles, custom, this brand, that brand, yada, yada....
All the "other" components / pieces / parts certainly play into the picture. Trigger, balance, stock materials, mags, finishes, and whatever else.
But....
The humbler is always tight groups.
What say ye?