I realized that the game is "better" in a sense when Carley is around, and that Episode 2 and 3 are easier because of her. My reasons?
Carley: Easy mode
-In Episode 2, you get attacked by an undead Travis/David. With Carley around, she will shoot the walker in the head
-In Episode 3, you get the chance to interact with Carley to the point where she can give you a kiss on the cheek, lifting your hopes and spirits.
-In the bandit raid in Episode 3, when the walkers begin to attack, Carley will assist you in taking them out.
-In Episode 3, she also gives you the chance to tell the others about your past, which makes them respect you more.
Doug: Hard mode
-In Episode 2, you get attacked by an undead Travis/David. With Doug around, he will attempt to hit the walker in the head with a plank of wood. It doesn't have much affect and you have to deal with it yourself until Larry/Mark takes it out.
-In Episode 3, you get the chance to interact with Doug. He will tell you that he feels completely useless, which in my case, made me kind of sad.
-In Episode 3, when the bandits raid, Doug will warn you about the incoming walkers, and not wanting to waste any bullets, stays in the RV. That leaves Lee to take them out.
-You saved Doug. He doesn't know about your past. Therefore everybody is taken by surprise when Lilly rats you out.
I feel like Telltale unintentionally made the game harder for those who picked Doug. Funny thing is, most people picked Carley.