Read closer. The only thing that seems that it does is the following: "Small businesses create over 75 percent of the new jobs in the United States." It says 75% of the new jobs. This is the important piece. Jobs in small business are volatile because of the relatively low success rate of the businesses. The goal is to have more jobs at a given point in time, not just create and destroy frequently. Therefore what may seem to contradict the census bureau, does not. But even if it did contradict, probably a safe bet to go with the census bureau on this one
This is important! You can in fact create some business with low to zero investment. But how can they grow? The answer is reinvested profit. Internal or external investment are the same principle. If you want to slow the economy, take that profit away from them or take away external investment dollars. Either one has similar effect.