Not at all. Lincoln's actions were overseen by Congress and the Supreme Court. Pinochet's were not. Lincoln submitted to a presidential election as mandated by the Constitution. Pinochet fought the referendum to the end and then made sure the Constitution allowed him to retain a great deal of power - head of military, senator for life, etc. Lincoln believed first and foremost in democracy. Pinochet believed in the police state, even before his coup. There is no apt comparison between Abraham Lincoln and his actions under the Constitution and a thug like Pinochet.
Yeah, sure. Suspending habeas corpus was "Constitutional". Arresting newspapermen and closing newspapers was "Constitutional". Lincoln DESTROYED the Constitution to "save the Republic".