The swings may be similar in design to the tower rides, but they aren't nearly as reliable mechanically. Skyhawk broke down the first week it was open, Valleyfair's installation was down for weeks(?), and Kennywood's Swing Shot hasn't run two sides for more than about a week all summer, and blows out sides on a weekly basis. I know that new rides are expected to have issues, but I've never seen rides have so many mechanical failures before (at least in Kennywood's case).