In English, we have the expression To-may-toh, to-mah-toh to kind of say "either either". Is there and equivalent expression in French?
You could use
C'est du pareil au même
The meaning is basically equivalent to saying "there is no difference".
A fairly old-fashioned one is "c'est blanc bonnet et bonnet blanc" (literally "hat of white and white hat"), which has the same meaning as "six of one, hald a dozen of the other".
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+1 For what it’s worth, I like this one best so far because it successfully maintains the literal “two-ways-of-saying-the-same-thing” notion (by providing a specific example) that is present in “[I say] tomato/potato/either, [you say] tomato/potato/either.” (Granted, imo simply adding “bourricot” (= "PAREIL A L'ANE") to @YohannV. 's first suggestion would come close to accomplishing this too.) – Papa Poule Nov 9 '16 at 15:39
You can use :
Pareil ; la même chose.
Or if you mean equalized between two
(Anglicisme) (Familier) À parts égales, cinquante-cinquante.