I read it as a response to the line: > that same exact logic would also justify the 2003 invasion of Iraq... and it argued that justifying the Iraq war is on

I read it as a response to the line: > that same exact logic would also justify the 2003 invasion of Iraq... and it argued that justifying the Iraq war is on a different scale, not comparable in either death toll or long-term effects to what has taken place thus far in the Arab Spring.