I love my Star Wars to pieces but Ghostbusters is more fun to play for me.
I love the challenge of controlling the ball after the first plunge to then go for whatever the highlighted skillshot is and get a jump on a certain ladder. I also love that if you hit any other shot on the PF it counts as a miss and it makes you work a little to start a mode. I think it's a really genius idea. That element alone saves the game from being too repetitive to me.
Once you figure the system out after a few games there's really no reason to always start with Who Brought the Dog. Sure, all the modes are "hit this lit shot", but there's a lot of secondary stuff going on... hurry ups, capturing ghosts, etc... and I love that if you nail your shots in a certain order you can stack one mode into a different ladder immediately upon completion, or also stack with Storage Facility multiball.
Both games are completely polarizing so you truly need to sink some time into both to see what clicks. I'm a huge fan of Dwight's code so take my opinion with a grain of salt. I'd love to check out GOTG but unfortunately have not yet so no comment on that one.