It also means there isn't insane damage going out every encounter... And when it does, you can nullify it quickly and instantly.
If your problem is that it takes you too long (1-3 seconds) to nullify a 5 minute cooldown, then I'm not sure what to tell you... You would think druids would have an insanely easy time with warriors. Natures grasp the warrior, travel form out of the hamstring and zoom out of the way and continue healing until they charge you again. Rinse and repeat. I just can't see how you are having a problem.
If you have multiple people on you, call for peels. If they refuse to peel off you.. Well.. That's battlegrounds for you.