all square vs on an equal footing

all square

adj
  • With all players or teams having the same score; tied, drawn. 

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 all square and on an equal footing occurred in a corpus of books? (source: Google Ngram Viewer )