First question is a 2 point knockdown score but 1 point penality for a foul! One point advantage!
The second question is a difficult one without viewing the senerio! Your granted the 2 point advantage from a knockdown but if your lossing the round big it could be a 1 point up or even round!
If even you need to look hard for an advantage from one or the other. Even rounds should be a rareity and theres usually a winner if you look hard enough!
Also consider the effect of the knockdown was it a flash or a meanigfull drop? Ray.