According to this in chapter six
"***when maximum likelihood estimation is used to generate the log-
likelihoods,then the closer that the log-likelihood(LL) is to zero,
the better is the model fit.***"
When maximum likelihood estimation is used to generate the log-likelihoods, then the closer that the log-likelihood(LL) is to zero, the better is the model fit.
So we can say that AFT1 better than AFT2