COMING OF AGE: Tracy and Chee Seng

My class and I read The best of times and watched Thirteen, this two film have a similar plot, two young main character with problems in their lives. Let's start compare this two stories.
I advise, THIS IS MY OPINION, said that, I'll start.

Chee Seng, the main character of The best of times is a Malasyan boy with a divorced parents, like Tracy, the MC of Thirteen.
Chee Seng and Tracy they were involved with "bad" influence, and this is the principal diference between these two char.
Chee Seng was involved because his friends "killed" his dog, and Tracy because she wanted be popular.
Tracy wanted the change of herself. Chee Seng not.
Yes, yes, "Tracy have a worst family status", maybe, but she lived with it lot of years; for Chee Seng was a shock, one day my dad fucks my aunt, next day my dad run away, next day my mom hits me.
Tracy absorved the personality of Evie, Chee Seng remains the same.

Conclution;
Chee Seng is more mature than Tracy.