Comment on "Self-similarity and transport in the standard map"

We show that the numerical results obtained by Benkadda er al. [Phys. Rev. E 55, 4909 (1997)] for the escape-time distributions in the standard map ar e tit variance with previously published results [Europhys. Lett. 25, 565 ( 1994)]. We discuss these discrepancies in terms of the relationships betwee n the mean-squared displacement, sticking-time, and escape-time distributio ns. We also report on numerical investigations of the standard map. [S1063- 651X(99)07103-2].