Same ol question. I know how frustrating it is to fight against naruto and iruka. It seems that you're also using my lineup... so i know exactly how it feels like. Im not sure what the "real" counter is. but the only ways ive managed to beat Iruka and 2 Tailed naruto teams is to out last them with a stall team.

and even with that, i only sometimes beat them. Not even a hard counter team.

Against Naruto, you cant do anything aside from straight up brute force.
Against Iruka, pray that RNJesus is on yourside and he doesn't substitute every time.
The reason why you can beat Gaara is because Gaara has no "random" element. He's a straight forward character. Good defence, but you know what's gonna happen.

The thing with Naruto and Iruka...
you dont know what will happen. Naruto only gets stronger as battle goes on, and works well against lightning. I mean... 5% bonus attack per hit on him. Even if you brute force him, if you dont manage to kill him, well you're basically screwed because of how much extra power you gave him.