Yes inverting the tax brackets would increase revenue.
First of all you cannot compare the US with Germany or France, because neither one of those countries can simply print 5 trillion dollars and give it to their connected wealthy friends to bail themselves out of a busted bubble, at the expense of poor developing nations all around the world. These guys got to keep their houses in the Hamptons, while food prices skyrocketed and caused turmoil in a dozen countries... all linked to a massive exportation of inflation. The US (the top 0.1%) is in a state of open financial warfare on the world, and so far the US (the top 0.1%) is winning. One of the side effects of that war is a totally skewed representation of what our tax revenues would be if we were not at war.
Putting aside the obvious differences, you have to look at the data we do have, which clearly shows a hockey stick style runaway inflationary event over the last 30 years. We are living in the middle of global fiat currency meltdown right now. Every central bank is trying to debase all their currencies. One of the principal enablers of this is the greater returns provided by investment, ie the capital gains. This gets complicated but the key point to remember is that increasing the overall money supply through growth of money+credit also increases revenues. Anything you do that increases money+credit is also going to boost tax revenue. Lowering capital gains taxes and lowering the top marginal tax rate increases incentive to take profits and decreases incentive to invest. It is the fuel to the fire of rampant out of control credit creation. To be very clear: low top end tax rates are the chief driver behind this quadrillion dollar derivatives bubble that is blowing up all around us right now. It is a driver of extreme volatility, instability, drives wages down, transfers wealth to the top 1%, basically it totally wrecks an economy. But it also drives revenues higher, if you do not properly adjust for inflation. And that's how they get away with it. It all comes back to the manipulation of inflation statistics. They use owner equivalent rent as a substitute for housing prices and that covered up a bubble so huge you would think it impossible to cover up. But they did it, and they will do even more before it blows up so bad the dollar is completely destroyed and we become Spain/Greece. But they will always be able to claim an increase in revenues. That is in fact why washington perpetuates all these bubble policies: they all boost tax revenue.
It is much better to have higher top end tax rates because it leads to a more stable system. You eliminate the source of the greed which drives the rampant credit creation. There is no incentive to create massive amounts of credit if your profits are just going to be taxed at 60%. No motive. In such a paradigm it is much better just to reinvest profits into your business rather than pay such a huge chunk of your money to Uncle Sam. So Uncle Sam loses revenue, but that is of course a good thing when you see how out of control "he" has become. This also causes your business to grow. It results in higher wages and a growing middle class. Everyone benefits, except for the parasitic financial class which is currently consuming 20% of our economy, arguably more than 50% if you count all bloat and graft in the medical and education sectors. It is utter massive, this parasite, and it is fed almost entirely by low tax rates. I wish people could understand this, but there is decades of propaganda telling people about how great low tax rates are and its almost impossible to break through that. But until we do we are totally and completely screwed.