Anyone know what the deal is with that, and is that the same Vader?
No... and (maybe) yes.
The "Legends of the Saga" box set was available two ways - first, as a K-Mart Exclusive and second, now available through EE.
The K-Mart version of the "Legends of the Saga" box set does NOT contain the same Vader as the 30AC "Training on Dagobah" BP. The K-Mart version of the set (
according to RS) originally shipped with a "regular" black Vader repaint of the "PotJ Dagobah Vader with PotJ Emp Wrath Vader head" figure, which would be yet ANOTHER Vader you need since you don't seem to have this set yet.
Now, the EE version of the set? Well, there's some debate there. Quite a few people have claimed (and the EE pic suggests) that the EE version of the "Legends of the Saga" set *may* be different from the K-Mart version. There are claims that the EE version of the set does indeed contain the "muddy spirit" repaint of the "PotJ Dagobah Vader with PotJ Emp Wrath Vader head" figure, previously found in the 30AC Dagobah Training Battle Pack.
Like I said though, I haven't seen anyone offer proof positive that the EE set has a variant Vader. Lots of rumors, but no one ever produced pics of an EE set to prove that rumored Vader variant.
So, in summary, you now need to find...
1) The original K-Mart "Legends of the Saga" box set
2) The 30AC "Training on Dagobah" BP
-or- the EE version of the "Legends of the Saga" Box Set,
IF you can find someplace that can confirm the rumor/pic that indicates the "muddy spirit" version is in there
3) The Legacy Collection "Training on Dagobah" BP
Only then will you have all the Vaders that you seek...
(and with that, I will now go off someplace and be embarassed by the level of nerdiness knowledge that my brain contains
)