Why does knifing suck so bad in Call of Duty: Black Ops?

Well first off there is a much smaller knifing range than mw2 probably because the designers realized how ridiculously unrealistic it is in mw2. Theres lungung because thats how you knife people.. Youre not assassinating them, youre stabbing the hell out of them, so the designers have to take into consideration the realistic affects of this. Also, if you miss, you miss. In real life if you go to stab someone, and you miss, you loose time for the action of lunging. So it makes sense in the game to be able to be shot while missing a lunge. As far as lagging, I don't know too much, but i would assume its whoever's system registers the kill first and sends it to the database/server. Of course if theyre lagging more you may lunge to where they were, but because they are lagging so much they are no longer there and you can't tell yet.