To me Scott, the fluke is more erratic, has a smaller profile, and can be just reeled in, jerked, dropped, etc. It has a lot more options than a true swim bait. Swim baits and paddle tails are more a throw and retrieve bait, and usually have bigger profiles. Also, flukes tend to be a whole lot cheaper, so I throw them in the nastiest places I can find, and don't worry about losing them.
I try to get baits that have the potential to be used several ways, so that's why I like this lure. I usually buy regular worms in 8" to 10" sizes, then just trim them to whatever size I want. It saves tackle box room.
Not a stupid question at all, I feel the same way here most of the time. The things you guys know just amaze me. I didn't have a clue what a wiper was until CJB posted the explanation.