The effect of the legendary cloak (in PVP there would also be added damage from the extra stats from the ridiculous ilvl) maxes out at 8% in heroic gear, exactly. This means that if you replace heroic gear with LFR gear, this effect will grow in size, because the effect on the cloak will stay the same, but all other damage will shrink. That's exactly what I was saying. The effect is also automatic, there's no cast time, etc, so in a heavy movement fight it will account for a HIGHER proportion of your DPS than normally. Again, that's what I was saying.