I don't know if it will work on the Lansky.The individual broadhead and how it is clamped,determines the angle.Those angle designations are just suggestions to begin with.Two different width broadheads will give you slightly different angle,using the same hole position.
The beauty of the KME knife sharpener is that it is infinitely adjustable.You aren't stuck with 25,30 etc.You can position it anywhere in between,to exactly match YOUR edge angle.
The trick is to blacken the bevel and try the stone,adjusting the angle till it matches your bevel exactly.If you can't adjust like this,you are going to stone off a lot of steel till you get your broadhead bevel to match your sharpener angle(the tail wagging the dog).
If you want efficient,try the KME broadhead sharpener.