"How much more targeted"
Than indiscriminate bomb attacks at population centers?
VERY much more targeted. This is no more accurate than looking at a phone book for addresses that people who may or may not have been associated with Hezbollah at some point and then bombing those apartment buildings, not caring who else lives there.
There are rules about war. Rules which you clearly have no idea of. No matter how despicable a terrorist organisation is, it doesn't mean it's morally okay for you to stoop to theirs fucking level.
Israel is a member of the UN, and has promised to obey these international laws as a part of the global community. If they want to say "fuck you we're allowed to kill however many civilians we happen to fucking kill with whatever flimsy excuse we may have", then soon Israel won't be a respected member of the global community, but another shitty terrorist state that everyone despises.