Can you explain why, it makes you more confident? (genuinely interested)

I know for my clients they would just like the name recognition that it brings. Selling someone on something they are familiar with is a lot easier.

I second that. Some people I know at companies really consider Ruby to be a toy. Having the SalesForces name behind it somehow will really be a change here in my case.

The same reasons mentioned above. I've worked with a lot of very fussy clients and have a big name like Salesforce to through out there when discussing options really helps perceived credibility.