Retiribution Paladins had about three weeks to really shine. Think of it as retribution for many years of being laughed out of PUGs. Blizzard implemented promised nerfs to the Class in patch 3.0.3. Dumptruk of Frostmourne is upset about the effect that these changes have had on tanking in the Protection specialization. He opined that reduced damage in Judgments equates to reduced threat per second. He finished is post with a plea to reevaluate protection Paladins.
In a response to the thread Rauss of Sentinels disagreed. He believes that a Paladin tank should not rely on Judgments to build threat. Rauss relies on Consecration, Hammer of Righteousness, and select Seals/Judgments to build aggro- depending on the situation. He thinks the original poster should expand to additional aspects of the class to realize its true potential.