In maha mantra their is 4 Krishna names and 4 Rama names. as per to the holy scripters one Rama is equal to thousand names of Vishnu and 3 names of Rama is equal to 1 name of Krishna.
Sri Rama Rama Rameti, Rame Rame Manorame;
Sahasrenama tattulyam, Rama Nama Varanane.
( Brihad-vishnu-sahasranama-stotra )



