I think it is a bit silly to talk about 72(or any other number) virgins in this case. Unlike Kasab, this cannot be called a case of pure Islamic terrorism, it is connected to & should be regarded as part of Kashmiri terrorism even if the guy is Muslim. There is no sense in talking about rewards in heaven like there won't be when Rajiv Gandhi's killers or Beant Singh's killer get the same treatment.
Btw, I like the new GoI policy of carrying out these executions without drama. I bet quite a few on the death row including the cases I mentioned will not be feeling too good about this.