Two stallions in a pedigree, don't necessarily make a great horse.
Think of it this way. The sire of this weanling, was bred to a mare, who herself has a ton of ancestors. What were they like in the first three generations? Same with the grandsire. There is SO much more to a baby, than it's sire and grandsire. Mares are greatly important, in any pedigree. Many think moreso.