"There is no difference between Jew and Gentile, for all have sinned and fall short of the glory of God, and all are justified freely by his grace through the redemption that came by Christ Jesus."(Romans 3:22b-24)
"There is no difference", between Jew and Gentile, or between Gentile and Gentile. Simply, "there is no difference", period.
Why is there no difference between a person and a person when it comes to standing before God as our judge? Because we all, every single one of us have sinned. But not only once, we still sin, we still "fall short of the glory of God".