I would say that statistically, over a large sample size, that the chances that either would abuse information is exactly equal.
Even if it were your local town, city, or county government managing it, do you think they're going to fight the federal government if they ask for access to it? Over you, a nobody, when the Federal Government is going to threaten to withhold money for whatever if they don't?
Anything too big isn't democratic as much as political spending, alluring promises (that will be broken), campaigning, making the others look more evil than you, etc etc
That's just one small example.