The link you sent just shows that they have zero days on Android: but they also have similar exploits available on iPhones.

Besides, the NSA having zero day vulnerabilities is nothing new and not limited to Android. Saying they have "remote sudo access" is misleading also and implies that they were deliberately built into android, although that may not be what you meant. Either way, the NSA will always have the type of people employed who can find zero days on smartphones and most importantly, not tell anyone about them.