Read other letters about this article
Of course Giuliani was under no obligation to spend 12-hour days at ground zero like the rescue workers; and of course it's likely that Hillary Clinton didn't spend much more time at ground zero than Giuliani did. But neither of these is relevant to the issue. The point is that GIULIANI CLAIMED to have spent as much time at ground zero as the rescue workers, which is total self-aggrandizing baloney. Clinton made no such claim.
As for the other letters demanding that critics instead provide substantive analysis of Giuliani's terrorism-related performance, this has been done in many venues, especially Barrett's reporting for the Village Voice (widely reported elsewhere). It's perfectly legit to ALSO discuss this aspect of the topic--which, again, Giuliani thrust into the conversation himself.