Grenade scatter Options

[Space Ghost]

1st problem
Okay, so the description of an airburst link (p.310) says it reduces scatter from 3D6 to 1D6. It mentions nothing about -meters per success.
Page 145 says the same thing, and goes on to say that grenade launchers are -4 meters per success.
But the table on p 145 says airburst grenades go to 1D6 with -1 meter per success.

Is the table wrong, or the text? It seems that 3D6 -4 per success would be a lot better than 1D6 -1 per. i know that the real reason to get airburst is for the immediate explosion, but still. Preferably, the table is wrong and an airburst gets 1D6 -4 per success. Which means you will always be sacrificing at least one success when you use grenades, but rarely more.

2nd problem
i'm having difficulty wrapping my head around the "targeting a spot on the ground" rules. It's treated as a success test, but that means that anyone who does get caught in the blast doesn't get their reaction roll to defend with. And since targeting a spot can also bypass pesky modifiers like enemy cover, is there ever a reason to aim directly at a person?