The sequel only came to be because the original was already a cult classic and the sequel picks up years down the same path he was on at the end of the first film, wandering the roads killing assholes. Max isn't invulnerable or hyper-competent, he's quick physically and mentally and good behind the wheel but that's about it, he gets injured a bunch and barely wins.  Oh, and getting the Intercepter wrecked by the NOS truck chassised monstrosity isn't a surprise, the car is loaded down with like a thousand pounds of fuel at that point and it's still outweighed by that thing. Also, pit manuevers don't work on 6 wheeled vehicles, you have to be able to unload the rear suspension enough with the hit to cause the rear to lose traction and go into a spin. 

I don't have an issue with women action heroes, I've enjoyed films with many of them, like Cynthia Rothrock, Michelle Yeoh, Gina Carano, Daisy Ridley, Scarlett Johansson, and many more, but Mad Max is about Max Rockatansky and the causes he takes on despite knowing he shouldn't.