Pollard saved lives. Iran's nuclear reactor was destroyed as a result of the information that Pollard shared. His act was a crucial positive for the free world.
By contrast, Barghouti is a terrorist leader. They are not equivalent. Pollard has served a longer term than any of those who have shared information with enemies of the U.S. Pollard shared information not with a U.S. enemy, but with a U.S. ally, Israel, which supports the U.S. enthusiastically because of a shared set of democratic, freedom-loving values. Barghouti represents values that bring the world woe and destruction.
Was it positive for the US, the country that provides for Israel's freedom?