I have a TWD with the Nine Inch Nails audio. It's a bloody, dark, stressful, intense, industrial, gritty adrenaline rush. I can't play it before going to sleep because it gets me uptight & takes me a while to unwind.
AS on the other hand can be a rush but it's got humor, some classic rock tunes that do not seem harsh (Metallica) & its more upbeat/positive.
I played AS @ CP Pinball & knew right away I was going to buy one. That says a lot because, pun intended, I'm "Jaded" after going there for 8 years & playing everything ever made for the most part. It's rare I play something & say "let's buy this complicated 300+ pound pain in the ass that costs a stupid amount of money" but Aerosmith grabbed me.
Maybe it's just the perfect contrast to my collection & I'm easily amused?