How does *Default Pawn class* works, how does it differs from normal pawns?

Question is clear, I am quite a newbie here. If I were to give some contex, I am making a vividly 2d but actually 3d game, works just like a 3d game but simply 2 directional so to say. At first I made the character as a (normal) Pawn but had to attach movement component to a set gravity direction node and the pawn class failed, than I switched to character and that it’s capsule component occured problems, even tho a lot of fellas here help me alot, I am looking for a simpler way to get over stuff here. By the way I opened lots of topic, if you are really wanna help you might as well take a little look at them.

Some hints I have to learn already, how does a Default Pawn Class’ s collision works, is it any different than a character comps capsule component? And especially in the terms of gravity etc is there a noticable difference between it and a character comp, how it behaves and how is it’s compatibility, like I can attach it’s movement component to this node and everythning will works just as same as it was a character comp? :