Congrats and a great debrief. I probably would have written a very similar heading

Still 99th percentile and I doubt it will keep you out of any program. Don't see how a 770 would make any difference, so would not think twice about it.
P.S. About why E is not the best answer, it is because of this:
shows of all networks combined. GMAC cherishes scope and this is a great example of a harder question that makes the difference between right/wrong only with scope. We are not talking about all shows/all networks, only this one. It is a giveaway when something is out of scope. It is not logical but it is something one has to learn to get a high verbal score (GMAT quirks).
that the answer is B without any doubt or confusion..
E goes out of scope by getting ALL networks involved in the end of the choice.