With regard to the perpetual check I do not agree ... this takes two players to repeat the moves ... why should it be white who is responsible for resolving the situation ... therefore here I think there is an equality.
With regard to the "no more legal moves" scenario I can see the logic in what you say but I think this was just poor man management on the part of black ... there were other paths of play which would have lead to a win for black.
As for the black vs white, I think you are right although (discounting games against you) I think my win:loss for black and white are similar.
(gem) Hvis du vil spille et spil med en modspiller som er på omtrent samme niveau kan du lave en invitation med et ønsket BKR-område. Da kan kun de spillere med den BKR se og acceptere invitationen. (Katechka) (vis alle tips)