The committee is FAR more arbitrary than the old BCS system. At least a third of that formula was set in stone before the season began, and the other two-thirds, while by vote, had an advantage over the current system in that so many more votes theoretically allows for more democratic opinion.
Now, a small handful of people can do whatever they want. It's much easier to put in who they want in, and they're accountable to nobody. If the committee wants Alabama in, they're in. If Alabama doesn't make it, it's because the committee didn't want them.
Resume has so very little to do with it.