I don´t know if there are precedents of tournements where the Black win or
Draw is overvalued, but it was only an idea trying to take fast decisions
about what player goes to the next round, without extra games. In Chess,
there are statistical reasons for suspect that White has a very little
advantage over black, seen the results of G.M. games in tournements. In
many variants it is possible that the little advantage is diluted, but in
other variants that may not be the case. I think that in some little board
sized variants, the White has advantage, but I don´t want to qualify it,
neither mention the possible variants I have in mind, because I have not
enough elements to judge. Well, if there are another good ideas for the
Tournements, welcome. But it may be good avoid a lot of extra games in
each round.