Excel: Countifs and Sumprod not producing same result when they should

Here are two formulas that should produce the same result: =data1!C$2)+('all emails date'!$D$3:$D$164000="-"))) ="&data1!C$2)+ COUNTIFS('all emails date'!$B$3:$B$164000,"<"&data1!C$2,'all emails date'!$D$3:$D$164000,"="&"-") The formula using countifs is correct. It produces ~8000. The formula using sumproduct is incorrect and produces ~14,000 Cell data1 C2 is the first of January 2014 1/1/14. All emails date! column D is a date field or, if not applicable, a dash "-". All emails date! column C is a date field and has only dates. Why are the results so different? I know, trust and love sumproduct and do not want to give it up.

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This thread is current as of September 23, 2014.

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