Check out:
http://msdn.microsoft.com/vfoxpro/productinfo/faq/default.aspx. Towards the middle, it specifically compares VFP favorably to VB and VC++. Towards the bottom, it compares VFP to Access. I also like how it talks about the advantages of VFP for web development...
>Is there a document published, that has some kind of official look, that promotes the advantages of creating an application in VFP which can be given to potential customers when submitting on the job?
>
>Thanks