Your logic is wrong on so many levels. That is not a straw man argument at all as far as I can tell.
You are actually making a straw man argument by taking what Dan said and exaggerating it.
He said we could be 5-5 without PR, not that we would be.
Another distortion of logic in your post is that Ballard would have to feel that his option was better. That is wrong. It's a non-sequitur. What if Brady stayed in NE and Rivers signed in TB? If Ballard thought PR was the best, then he would have to sign someone he thought was worse.
Teams do not always get to sign who they think is better option. In FA, the FA decides who is his best option, not the other way around.
Now if you are talking about beating KC in the playoffs, I don't think this team or any other is legitimately good enough.
But are you freaking kidding? The last few weeks have proven that we are good enough to compete Supe. Winning is not guaranteed, but surely it's pretty obvious that we are competitive with the best teams.
I didn't know if we were or not and was skeptical before Baltimore, but we've competed pretty well against them and since them.