Quite so.<br/><br/>If it's any consolation, the Encounter Level (i.e. the XP) is adjusted for the ambush setup (which is something the DMG suggests) - the fact that they were hiding and likely to get a surprise round, the choice to 'blow out' the bridge, the elevated positioning, and the use of a silent Alarm spell to know when to cast their Spider Climbs.)<br/><br/>(This is a function of the original setup, not how the battle goes. In other words if you somehow turn around an ambush setup, you still get the larger XP.)<br/><br/>