Has anyone actually had this one used against them? Unless you are making a fleet expressly to do this (a fleet of nothing but Torothas?) it is not going to have that much of an impact. Even if they do design a fleet like this, what happens when the game is rolled up and it turnes out to be something without jumping? The times that I have used this in games, it has done meagre damage, and of the two times I have had it used against me, one did a whopping 9 damage to a sharlin, the other, they managed to almost kill two orbital platforms. Whoopdee-friggin-doo. There are two real reasons for this.
1) Yes there are 6AD of triple damage that still have to hit, with no AP. The most likely target for these will be your large ships, those that pose the biggest threat. Most of those ships are going to have a 6 hull. That makes one hit (statistically).....oohhh....I am so scared..... even if it is hull 5, that makes out for six damage (as likely as not). Yes, there is the chance of doing more damage, and even of criticals, but if you are going to be concerned about something that improbable, you are being overly defensive.
2) The biggest issue is whether or not the 6AD TD is worth the trade off of not having it on the board and of bringing it on on top of the enemy fleet. Everything with AJP has good range on a main weapon (shadow omega, Victory, anything but a Torotha for the Minbari, etc). I would rather open up that JP behind the enemy, away from thier big scary guns and hit them from well behind. Is the relatively small return of a handfull of damage worth the trade off of the ships guns?
The actual damage done by a JP hitting someone is unimpressive. The biggest fear is that 'what if I get hit by a big critical?' Well, the answer to that is "It will suck," but its going to suck whether you get if from a JP or the guns of a ship. There are trade offs for using this tactic. Most notably, losing the firepower of the ship for at least a round. Really, the whole JP bomb is more of a JP firecracker, and in all reality, it is one of the crappy safe and sane ones that whisle and throw sparks. That being said, I will agree that it is a fairly cheesy tactic, but does it really qualify as cheese when it is wholly unimpresive?