What is the "Crit Rate" of our clones?
Your own Precision affects clones yes.
They have the same precision you have and their crit chance is based on that. They don’t benefit from flat critchance increases like sigil of accuracy or fury on yourself or the dangertime trait. If the Phantasm itself has fury they get 20% extra but not if only you have fury.
Though I think Signet of Inspiration’s active effect will give fury to them if you have it.