Lets look at this in a different light. I am not a Ret paladin atm i am Rogue. All my gear scales my damage and all my talents scales my attacks with a crap load of on demand utilities and most of them are survivability utilities and i only do melee damage.
Now lets look at me being a Ret paladin. i only do melee and spell damage my talents scale my crit on both of these and i only have a couple that scale my base spells. I can't heal very well or for very long and i do not use the same gear as a tank so taking damage isn't something i can do for very long. All my on demand spells that don't do damage don't do much for me as a Ret paladin and i rely heavily on divine shield, Hoj and first aid to survive because healing as Ret is like whipping my ass with butter it sucks that much.
Now in wotlk healing might be a bit better but i have to wait to end game to see how well it is going to scale while being Ret. I'm not saying that i can do what i did back in BWL days and go in as Ret with healing gear and be viable. I mean being viable as a hybrid that is spec into a dps tree. It's a wait and see till end game because as we all know Resto Druids are 110% better healers then what they started out to be in the beta for TBC.