Well, no - if you can accept that even with a player less we survived at 1-0 until the 80th minute then it's neither far fetched or arrogant to believe that had we had 11 men we would have had not only a better chance to have lasted that final 10 minutes, but would have been in a position to push on and improve on what we had already managed in the first half. It was clear that by the end the extra work of having a player less was the difference.
Not to mention that coventry would not have benefitted from the psychological boost they clearly received following the red card.
For sure we don't know what might have happened, but it's reasonably fair to say that our position would have been very different and considerably stronger had we finished the game 11v11 - that's not madness, that's just basic common sense.