for one to have as much power as the other (for example, when speaking of people in conflict) (see Molina)
Alonso de Molina:
neneuhcanamiqu.i tito. (pret. otitoneneuhcanamicque.) poder tanto el vno como el otro. s. los que luchan. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 68r. col. 2. Thanks to Joe Campbell for providing the transcription.