Actually, all guards are now slightly bigger than normal size, giving them slightly more hp than 100. Therefore, butterfly knives and other weapons that are typically a one-hit kill will not instantly kill guards (unless if they're crouching, of course). I think the machete and baton will still insta-kill since I think they do over 200 damage or so. Although, if the butterfly knife on the server wasn't changed at all by Crown, I think it does extra damage if you backstab, it just isn't noticeable since it's a one-hit kill in most cases.
Poll