Seems to me like it gives you a bunch of gear combinations you'll never use (four gear combinations that will give you 27+ mph at 90rpms) with only two gear options for the 18-23 mph range. On the other hand, you could probably spend 90% of your time on the small ring but even then, the spacing doesn't look all that great. But if it works for you then it is all good. As I said, rider dependent.