The stun from the start up is a nice feature. It saves you from getting gimped easier when off the stage. Because of the start up, PKT2 is a bit easier to land, though, you still need to try it in different ways, because it's not always going to work against your opponents. Since I've gotten this game, I've found myself using PKT a lot more than I normally would in previous Smash games. Even PKF! Never feel guilty for spamming PKT or PKF, because doing so will only give your opponent the advantage. I made a Peach player leave the game last night after totaling her with my projectile. That's how useful these things are. xD