Defensively, the Savage Orcs enjoy a pretty big advantage. T3 vs T4 and they have a ward save to the Witch Elves' nothing. When it comes to shooting or most magic (outside of something like a Purple Sun or Pit of Shades) the Savage Orcs are far more difficult to remove off the field. Once it gets into actual close combat, their defensive advantage disappears. The Witch Elves follow the old axiom "the best defense is a good offense". Their advantage is that they almost always strike before their opposition, while the Savage Orcs, with I2, almost always strike after their opponents. So while the Witch Elves have no actual defense to speak of, they typically have less attacks coming back at them because they've decimated the enemy. Still, I have to concede the point that the Savage Orcs are more resilient.
While defensively the Savage Orcs have an advantage, offensively (against most opponents) the Witch Elves reign supreme. Even though they each boast 3 attacks and the Savage Orcs enjoy a strength advantage, poison and re-rolling to hit seems to win the day. The tournament definitely showed that, overall, the Witch Elves were more offensively potent (they even took down the Destroyer!). Additionally, the Savage Orcs are a lot less scary once their Choppas rule ends after the first round of combat. The one caveat of course is that the Witch Elves are terrible against really good armour saves. Against 4+ or higher, they do very well, at 3+ things get dicey and they really struggle against 2+ or better.
The movement advantage is pretty negligible, but the extra point of leadership is admittedly pretty nice to have.
So I guess it comes down to what you're looking for in a unit. They each have their relative advantages:
Witch Elves:
- ASF + I6
- better movement and leadership
- poison
- no Animosity
Savage Orc Big'uns:
- higher toughness
- 6+ ward save
- better strength
- more unit options
True, but is it worth it to pay 20 points for impact hits on a M4 frenzied infantry unit?
But only 1 unit per army can be upgraded to "Big'uns".
Also, the Witch Elves are a core choice themselves, so you can take as many of them as you like.
Both are great core units. I recognize the value in each, but if I had access to only one of them, I'd go with the Witch Elves. I can understand though how someone else might choose the Savage Orcs instead.
We definitely differ here, I love the Witch Elves. Some of the best models that GW has produced, and by far my favourite in the Dark Elves line.
It would be awesome if you got them. While I prefer their Forge World sculpts, the Lost Kingdom models are also amazing (and are not insanely priced). I could always use another Chaos Dwarf ally.