Powerful artillery strike, damaging a single tile and pushing adjacent tiles.
Rock Accelerator
Launch a rock at a tile, pushing adjacent tiles.
These descriptions make it sound like both of these weapons do the same thing, except the rock accelerator does 1 more damage.
In reality, it appears that the artillery pushes in all directions, whereas the rock pushes only in perpendicular directions (that is, to the sides, but not forward or backward).
Would it be possible to get a clearer description?
It also might help to include more than one Vek in the Rock preview animation, so it can be seen that Vek on the sides get pushed but Vek in front and back of the shot don't.