Rank 1 Consecration was strictly worse than Demo Shout, even when talented for Imp. Righteous Fury. We're taking something like 120 threat over it's total duration, or 15 Threat per Second. You'd be lucky to out pace a Renew ticking on you with it, let alone a DPS.
When it came to reflective damage, Paladins only got the modifier on
Holy damage. It was great for Retribution aura and Holy Shield, but it didn't affect other sources. It's a very poor argument to make in a Paladins favour though - Warriors and Druids could also benefit from relective damage, and at a higher modifier to boot. If you wanted to go out of your way, you could load up on Thorns, Fire Shield, Ret Aura,
Crystal Spire, and throw on a
Force Reactive Disk with a Shield Spike on it.
Blessing of Sanctuary, while a Paladin skill, is also castable on other tanks too. When it comes down to it, the gap between other tanks and Paladins isn't anything like as large as you think. They got bonus threat from
all sources of damage, as well as from applying buffs, debuffs, gaining rage, and so on. The Paladin only got bonus threat from Holy Damage, nothing else. All those little extra bits Warriors and Druids generate really does add up, and extremely fast too.
All of which ignores the elephant in the room. Mobs need to be hitting you first for reflective damage to work at all. Paladins have no way to make that happen, Warriors and Druids do.