Right. The key is that, with the exception of the inflection point of the Laffer Curve (i.e., first derivative equals zero), there are two tax collection points for each tax rate. (See:
http://finxknowledgeatcbsdu.wordpress.com/2008/03/12/laffer-curve-inside-out/) That is, a marginal tax rate of 17% brings in just as much revenue at a rate of 80%, mainly because of tax avoidance issues. However, another reason is that, with lower rates, people will work more because they get to keep more. This is a fly in Obama’s soak-the-rich plan.
Yes, I don’t even need to look at your link to understand what you are saying, and I agree wholeheartedly.