Originally posted by: DrunkPotHead
I don't understand why Gai can't pwn Itachi if he opens all eight gates. Think about it, it has been said (about Rock Lee, which is much weaker than Gai) that if he opens all 8 gates, he becomes temporarily stronger than hokage. I bet if Gai opens all 8 gates, he could own Itachi. And sacrificing Gai to own Itachi seems like a very good trade-off.
Even if gai could open all 8 gates, he still probably wouldn't be able to kill Itachi. Since it was said that whomever opens all 8 gates has more power than a hokage then dies, it's not said how long he could last before he dies.

I mean.. Lee opened 5 gates and kicked gaara's ass for about 40 seconds then essentially passed out. The same would probably happen with gai, only he'd just die.