From Longman Dictionary of Contemporary Englishsame differencesame differencespokenSAME used to say that different actions, behaviour etc have the same result or effect ‘I could mail the letter or send a fax in the morning.’ ‘Same difference. It still won’t get there on time.’ → same
Examples from the Corpus
same difference• The same differences are evident in pay disparity, which is greatest at doctoral universities and the least at four-year colleges.• The same difference of sense recurs in the following: 79. 