Carrothead,
That's a good question and the basic answer is it's an example of the different styles of baits that I can build.
The body styles are all different, flatside, semi-round, and round baits. The lip styles and the lip angles along with line tie positions are all just a little different. All of these factors affect the action and cause a different action in each bait. Each of those baits will have it's own personality in the water. Each bait will have it's own situation that right for fishing that particular bait. I hope that gave a little insight to your question.