A common problem that gamification projects face is that very few people understand the subtleties of how it works. Most can get their heads around the workings of simple systems, but more complex concepts can be challenging.
Sales team gamification may have some predictable player types, but the design of a solution geared towards sharpening sales behaviour can be tricky.
In the post, What Does Sales Gamification or Sales Performance Management Actually Do? A Day in the Life of an Account Executive and his Manager, published by GamEffective, they explain exactly how this can work. An interesting statement made in the article is that "gamification isn’t a game overlaid over work, but more importantly emphasizes why gamification is like a fitness tracker for work".
The post sums it up nicely by showing you a day in the life of a seller and their manager.