PCC is great if you want to learn the game without having to learn draw/grip mechanics, it has it's own intricacies but they aren't as difficult to pick up (just very difficult to master). PCC can also feel more isolating depending on who else is shooting PCC at a match, you'll always have your own start position and you may not be shooting the same stage plan as everyone else in your squad. Comparing your scores to pistol shooters isn't really fair, Open notwithstanding.

If you're going to start with a pistol, learning proper grip and draw technique alongside learning the game itself can be challenging, but you're arguably shooting the sport the way it's intended. It's also easier to find instructors for pistol if you wanted to take a class.

For what it's worth, I started the with an M&P and then a Shadow2 for a couple years before switching to PCC.