Everything has a counter. If you get a Sentry Gun, there is NO other counter to it other than the EMP grenade or standing there like an idiot for 30 seconds shooting it.
If this is such an issue for you, choose your streaks more wisely and choose things that can't be EMP'd. HKs/Hellstorms for example.
"completely unrealistic" Pretty dumb coment. Yes there is a fair amount of 'unrealistic' things. But the whole game and weapons are based in reality. We aren't playing a sim but one that caters to enjoyment. It's not cartoony or sci fi either. So yeah I'm using "real life" arguments. How dare I , huh?
I play alot of CTF...EMP's ruin my life. I run care package/Guardian/Sentry and when someone run's emp's...it basically screws my scorestreaks over. They don't even have to do anything but push a button to destroy them. And they have an infinite number of tries to get close enough, since dying replenishes their emp's. I agree with the fact that they should disable instead of destroying scorestreaks. When I go offensive, I always use EMP's because they are amazing at taking out every defense at once. 2 claymores near the flag with a shock charge at the door and a sentry gun guarding in the rear? No Problem! 1 EMP will fix all that right up.