Ximenes088 said:I read it as an interrupt. There's not a whole lot of point in being able to cuff someone after they've already moved, and more importantly, it leaves the fighter with no "stick" to him. The way I read the ability combination it amounts to...
A) If an adjacent enemy moves, get an OA before they move. (Standard situation in which everyone gets an OA).
B) If an adjacent enemy shifts, get an OA before they move. (A special ability of fighters.)
C) If you hit a moving enemy with an OA, they stop. (A special ability of fighters.)
B) should be "... get an immediate melee attack before they move". This distinction could be important in the presence of feats/powers that give bonuses to opportunity attacks.