No, it does not say that. It says that those saved are given an ability to measure faith. It is "the measure of faith", not "a measure of faith", being Christ's faith. Observe:
[Rom 12:3 KJV] 3 For I say, through the grace given unto me, to every man that is among you, not to think [of himself] more highly than he ought to think; but to think soberly, according as God hath dealt to every man
the measure of faith.
Rom 12:3
For
G1063 I say,
G3004 through
G1223 the grace
G5485 given
G1325 unto me,
G3427 to every man
G3956 that is
G5607 among
G1722 you,
G5213 not
G3361 to think
of himself more
G3844 highly
G5252 than
G3739 he ought
G1163 to think;
G5426 but
G235 to think
G5426 soberly,
G1519 G4993 according as
G5613 God
G2316 hath dealt
G3307 to every man
G1538 the measure G3358 of faith.
G4102
metron (Key) (G3358)
measure, an instrument for measuring