I'm not a backer, but wouldn't
Faith and Conviction now grants an additional +2 Deflection, +5 Fortitude, +5 Reflex and +5 Will to defenses.
or
Faith and Conviction now grants +5 Deflection, +10 Fortitude, +10 Reflex and +10 to defenses.
be better?
This makes it sound like the talent gives Faith and Conviction, especially if you skipped the flavor text.