Here is some good information on dyno tuning and testing. All the new bikes from the factory can be off as much as plus or minus 5% . So some bikes will run Lean and others will be rich from the factory.
Where 14.7 is in the middle and there's no way of telling until they are tested.
Then check out the articles June, July, September, of 2010.
DrDyno.com - the "Feel the Difference" therapy for your motorcyle