So im playing the campaign. On a Romulan mission with my Defiant.

So the I.R.W. Xatos Reman war-bird De-cloaks. As i enter weapon range i divert power to for shields and activate Emerg power to shield + science team 1 (total over 3000 shield power)

The war-bird turned toward my defiant like a SHARK turns on a dime (not even possible for that ship) opens fire.. and blew me up...... in 1 shot..
He proceeded to blow me up UNDER 10 seconds, if not his first volley then his second, 4 more times before i got lucky and destroyed him. I couldn't even approach him.

My Defiant Defense:
Shield = Covert shield array MK 8 Cap X 2 total 5,465 shield strength.
1 tritanium plating and 1 polyduranium plating. Total +18.5 Kinetic and energy
+ i activated 3,000 shields with my science station..
hull strength: total of 25,000

So add my Hull + shields + science team For a total of: 33,465 hit points + 18.5 armor

The I.R.W. Xatos did that much damage to K.O. me in 1 hit? several times? o_O