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I added an "also written as" term that may be seen as controversial to some, but the two idioms are synonyms. BCR is a technical indicator, but "price-performance ratio" is far less so. The rest of the paragraphs in the caput back this up: "Technical and news publications are often sloppy in their coverage of changes in these matters". — Preceding unsigned comment added by Cognatus ( talk • contribs) 23:50, 14 September 2014 (UTC) reply