[quote=darkwolf687]
Several dozen to 100 ships without shields vs hundreds at the least, an unknown number of which with a beam which will strip apart their ships? I'd be pretty terrified if I was said nation and that turned up on my door step, wouldnt you?
[/quote]

No. 

I don't see any particular reason why the vul'kruun would fear vessels equipped with beam armaments and protective energy barriers. Provided the vul'kruun's tactics are sound and they secure (and maintain) a numerical advantage, they'll destroy those vessels without suffering crippling loses. 

If a faction equipped with beam weapons and energy shields encountered, say, modern Earth, then yes you could probably extort them (for it would be akin to the modern US Army engaging in combat against a land force from the 1100s), but other space-faring nations are either going to scoff at you and obliterate you with impunity or they're going to put up such a fierce resistance that trying to assimilate them teeters dangerously on the edge of pointlessness.

[quote=darkwolf687]
Complete misrepresentation of what's said, I've never claimed that or stated I would be using missiles as the delivery system
[/quote]

That was sarcasm. 

[quote]Beam =/= Missile
Forcing a nation to make a change which will likely require them to play for time =/= Unstoppable weapons
Function of anti-matter. =/= Representing it as considerably more effective than it is
Lack of shields =/= Shields (you cant cite a counter measure to something if I've pointed out who I'm trying to use it on currently isn't operating such. People (usually) cant go hey presto and have a new component on all their ships)
[/quote]

1) I never said a beam weapon equated to a missile. 

2) Any nation is going to have access to plasma windows and electromagnetic fields unless you're trying to invade WWII-era nations that have just invented the atomic bomb. And if you're invading such low-tech civilizations, I don't understand why you're using antimatter weapons or energy shields to intimidate them into submission in the first place. Just threaten them with a small asteroid. Or a slightly bigger nuclear weapon. Or a starship equipped with some dense pieces of space junk that you can fling at the planet's surface. 

Or, you could use AM weaponry to get the job done because Rule of Cool, which is OK.