GC said it would do 50% more but is that on top of all the other bonuses or is replaced the 30% in Sword of Light.
Sword of Light
Requires Paladin (Retribution)
Requires level 10
Increases the damage you deal with two-handed melee weapons by 10%.
Your spell power is now equal to 50% of your attack power, and you no longer benefit from other sources of spell power.
Grants 6% of your maximum mana every 2 sec.
Increases the healing done by Word of Glory and Flash of Light by 30%.
If not current 30k FoL would be hitting for 45k. A big jump indeed!