"Emphatic result" refers to a very clear and powerful outcome. It means that something has happened or been achieved with great emphasis and certainty. Full definition
However, with emphatic results from such a large cohort study, Dr Choudhary was confident that the age of the sperm donor was of little significance in couples having sperm donation for fertility treatment.» (sciencedaily.com)
The Luther affair was not resumed by Rome till the turn of the year 1519 - 20, and it was nine months after that before the resumption began to have any emphatic results as far as the general public were concerned. (religion-online.org)
It was hardly an emphatic result though and the fact they lost Diego Costa to a muscle injury during the game suggests that Chelsea might just drop some more points after the international break. (justarsenal.com)