Hey, we all suck when compared to someone else out there. It's all about the fun, and if you want a little friendly competition then that's all good. My current 5 ball high is 800M+ (haven't updated on Pinside yet), but my setup gives free balls for special, etc. For me, I started first concerned about score, then for a period I worked on actually understanding the game and all of the rules and scoring, then I worked on playing games with a purpose and a goal in mind. Now that I fully "get it" I routinely score 200M+ in games with the occasional 500M+. Personally, I'm finding that I still enjoy Getaway and knowing all of the rules with an effort to execute a game plan when I play makes it more fun. When friends come over, however, I throw all of that out the window and just play for fun like I didn't know any better. Who wants to watch me play a ball for 5+ minutes - boring for everyone else.
BTW, if you haven't figured it out already, the easiest way to improve your opportunity for high scoring is to take advantage of the "Free Ride" feature. By letting balls purposefully drain immediately upon making the loop after launch (usually 2 and sometimes 3 per cycle) you can more rapidly make your way through the gears, thus opening up the high scoring features like video mode (gear 3), supercharger (gear 4) and redline mania (gear 5) - probably 50M+ combined at a minimum just getting to these 3 modes, not to mention if you keep your multi-ball going in RLM or running the red light you can get one or multiple super jackpots. Multiple times I've completed two full revolutions of the gears (can't remember if I've ever done 3), and this is where I've really scored well. Not sure if the community considers this "cheating", but I actually learned this by watching video of tournament Getaway play.
Also, this may sound silly to many, but I believe that Pinsound has contributed to me scoring higher more consistently. The audio experience truly makes the game more immersive and keeps me coming back more than I otherwise would. Out of all the money I've spent on my Getaway, the Pinsound is by far the best "investment", and if owned more pins from this era every single one of them would have a Pinsound (even if I had to get a part time job to pay for them!)