In Pathfinder Society my first character was Throckmorton, a fighter built on a 20 Point Buy° just like everybody else. I'm not an optimizer so by 12 level he was chucking out 30-40 points of damage a round while others were doing 100+ points a round. It was embarrassing.
Pathfinder (and 3.5 D&D from which it was copied) makes it easy to fail...er, I mean, not be optimized. For instance, I choose for Throckmorton the Combat Patrol feat on top of Polearm Master. I always like choosing feats and animal companions, etc. that reflect the adventures the characters has gone through. In the end the Character is an amalgamation of it's history.
On the other hand, I find Dungeons and Dragons 5e to be very forgiving for non optimizers. It is genuinely hard to not make a Character that will embarrass one at the table.
° Pathfinder used a different Point Buy system but I think 20 points of Pathfinder is nearly identical to 27 points of Dungeons and Dragons.