Hi @Anonymous ,
Based on your description, I have created a simple sample:
var _a = CALCULATE(COUNTROWS(FILTER(ALLSELECTED('Table'),[Producto]=MAX('Table'[Producto])&&[OFERENTE]=MAX('Table'[OFERENTE])&&[OFERTA]=MAX('Table'[OFERTA])&&[Precio]=MAX('Table'[Precio]))))
return IF(_a>1,"SI","NO Hay Empate")
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.