Jousting... Yikes!
The Amiga version is all but impossible, as I understand it. I have only won one or two rounds, ever. (And I've tried it quite a few times, over the years!)
I could routinely win on the C64 version, though. (Aim for just inside the near shoulder and click the button about 1.5 sec before the screen switches. 50% chance or better of a win.) Or, if you want to cause real problems, aim right at the horses' head, and click about 2 secs before screen switch. (You'll stab the opponent's horse, and get dishonored and tossed from the tourney, losing extra prestige.)
It's a shame that the remakes will never see the light of day. Though, somehow, I guess it's not terribly surprising. :-(