Most classes will outright lose against grip 3, too, in a 1 v 1 setting. A sith will outright lose against a gloan with blob or a trooper with insta-nade. Most every class in the game, sans Deka, Sith, and Mando, will outright lose to a rage wookiee. EVERY class without quick get-up can be chain-kata'd with no ability to break the chain.
All of those (blob, insta-nade, rage wooke, kata-chains, etc) are lame to go against. They're all unbalanced because the defender has no way to survive them. If we nerf lightning, we should also nerf every other non-counterable attack in the game. As a Jedi/Sith main I'll be happy not to ever have to worry about insta-nade and blob anymore!