No problem. It's pretty logical. The truth may hurt for some.
What? Survived the RDS only once? I'll correct you, he survived it twice.
Why? I'll help you count.
Hiruzen is a victim at the end of the Death God jutsu by being its sacrifice, but Orochimaru only lost his arms, not his life. That's
1.
Here's number two, Orochimaru is supposed to be the victim of the Death God afterwards, but Orochimaru cheated death once again by swapping bodies with a Zetsu. That's
2.
Sure, Itachi have pwned him with the Tsukuyomi and Totsuka Blade, but if you read the same manga as I do, you know the outcome.. Orochimaru
isn't dead at all. The guy knows how to play with death. I believe that Itachi >> Minato. That reason
alone is why Minato will not be able to kill Orochimaru.