Stumbling onto a situation where someone is getting beaten up and intervening might be a more plausible way of knowing. You tend not to realize what really happened until it's over and you start recounting it.
If you trained right and your body did what it was supposed to, things turned out well. "If your Aikido works", things may have even turned out acceptably well for the bad guy, since he got submitted instead of beaten to a pulp.
The OP was not style vs. style. It was about the relevance of individual techniques. When I post a question about martial application on a martial art forum, I assume it's going to go somewhere, or the website wouldn't exist. If I'm wrong, what are we doing here?
You're right: the OP wasn't about style vs. style. But this conversation shows signs of going in that direction, and I think no good can come of it.
In general, I dislike discussion about using aikido waza against "bad guys", because those of us who have never attempted such a thing (that is, most of us) don't really know what we're talking about.