The testing I have read/seen says differently. +1 point enmity = +0.1% enmity gain. On the other hand +1 AP or +1 STR or +1 VIT do not equal +.1% damage but actually less. Therefore +1 enmity is better than +1 STR or +1 VIT or +1 AP. If your at stat cap, which you should be, your really just comparing +1 enmity to +1 AP which I am sure enmity will be much better point for point.It's been really debated for a while on the usefulness of Enmity. It does have it's uses, nobody is contesting that, however every +10 enmity is only a 1% increase in overall generation so heavily stacking it tends to sacrifice too much damage potential which could far outweigh the benefits of the Enmity boost so it comes down to balancing to gain the best of both worlds.
If one had to argue however, reaching the stat caps would still take priority because they offer you the greatest DPS boost and you tend to get more overall Enmity through damage for each STR and VIT point than you do per Enmity point until the capped is reached. From there it's a toss up between Atk., Crit. Rate, Crit. Atk., and Enmity, because the returns on those stats are more even with each other.
I bet I could easily get about +45 enmity through melding on this skirmish weapon with a bit of effort which would be +4.5% enmity gain. So the real question is this.. Is there another weapon out there that will do +4.5% damage over a base skirmish weapon. With some testing you could answer this but I bet it will be NO, not even the Garuda's Axe would add that much total damage increase..... especially if your near stat cap and are strickly talking about the differences of DPS, ACC, and AP.