identical vs on an equal footing

identical

adj
  • Not different or other; not another or others; not different as regards self; selfsame; numerically identical. 

  • Bearing full likeness by having precisely the same set of characteristics; indistinguishable. 

  • Of twins, sharing the same genetic code. 

  • Approximating or approaching exact equivalence. 

  • Exactly equivalent. 

  • For more quotations using this term, see Citations:identical. 

noun
  • Something which has exactly the same properties as something else. 

  • An identical twin. 

on an equal footing

prep
  • In a situation in which all parties have a reasonable chance of succeeding; without conferring an undue advantage to any party. 

How often have the words identical and on an equal footing occurred in a corpus of books? (source: Google Ngram Viewer )