I am currently reviewing a paper and feel suspicious about their numerical results. I feel their results have been slightly modified to exhibit their superiority compare to other comparative methods.
I cannot give an exact mathematical reason why I think their numerical results have been manipulated, but it is so odd that in all 15 scenarios they have been better. Actually, I am pretty sure that their method is better than his benchmarks but not always. Maybe they modified some scenarios.
As I don't have a mathematical reason why I think some of their numbers are altered, should I ask for their computer code and run them myself?