Grenade dispersion

Rulebook say: on a result of 5 or 6 it will explode where the marker is placed; on a result of 2, 3 or 4, your opponent will get to move the marker up to 2u in any direction they desire (including across or through cover). On a result of 1, the opponent can move the grenade marker up to 4u.

Quick Start Rules say: on a 5-6 it will explode where you placed the marker; on a 3-4 your opponent will get to move the marker up to 1u in the direction he wants and on a 1-2 he’ll get to move it up to 2u.

I assume the rulebook is the correct version?

Thanks

Chuck