Let's not forget that Allende was voted to power, he didn't have a coup. Moreover, he apparently was not in favour of killings, unlike Pinochet.
But, imo, more characteric of all is that while Allende chose to stay and (as was certain) die, el General chose to flee.
Maybe the US embargo, the situation in Chile itself (polarization, workers vs other parties, mistakes all around) was primarily responsible for the crisis there leading to the coup. But one has to realize that massive polarization is in the longer run far more dangerous than a gov you don't like. And killing your enemies makes mass polarization even harder to even actually go away. That to this day there seems to be a huge split in Chile regarding its past, speaks volumes on whether or not it is logical to hail anyone, including Pinochet.
