From Teaching Game 53:
mat If Black just responsed defensively to all of the White a (I assume all of them are sente) these 64 points would still be his.
mat This would then be White's territory. Altogether 127 points + 3 captured stones. So White would have won with 50 points komi.
I know this is a very pessimistic estimation for Black, but I said: if Black ONLY defends she will lose.