For raiding thats not strictly true, its all depends on (WoW Gold)the group, the mob and the encounter. As a rule of thumb:

If either you, the mob or both are static:
When the mobs armour > 30%, then SD > Str/AP
When the mobs armour < 30%, then Str/AP > SD

If the both you and the mob are moving then Str/AP > SD
As far as crit goes, its a double edged sword and depends on (WoW Gold)the group you are in. If you are in the melee group with a feral druid and you are using Sanctified Crusader then with a 22% base crit, you will have 30% crit.

In terms of a dps boost from the crit itself, it scales the same as the item point cost as AP or SD. In terms of vengeance, while more crit does mean vengeance will stay up more. To quantify (Cheap WoW Gold)it adding 1% crit would increase your dps by the same amount as adding 22 strength, the dps increase from that extra 1% crit helping to keep vengeance up would be ~1 dps in high end gear. The double edged sword part is that you increase your chance of a crit string and pulling aggro.

weapon skill in pvp, Halmir not to judge you but I have runned in arathi with 0 skill on 2 handed axes and I was hitting as dmg and chance of hit like I was 350, ofc in pve I was no hitting lvl 68 etc mobs, so are we sure weapon skill work in pvp? Or was just mine unlucky/lucky case???

AP>spell dmg, so why if I run withno spell dmg my spc proc are inferior of my normal white hit and cs do the same dmg as a white hit? And If I start to put spell dmg on me soc procs and cs make more dmg than white hits, a prove is when I was holy with near 400 spell dmg and 800 atk power my soc was critting over 2k with no aw, now with 1400 atk power and 250 spell dmg my soc crit for 1700 -1900, is so much worthless spell dmg?? I continue to think 300-330 spell dmg 1300-1400 atk power 23-24% crit unbuffed are the minimum to reach as ret paladin.

Anyway is a good guide, specially for who have never tried this spec, and there are a lot of paladins that have never tried it and realy don't have clue how it work. 

However, run a raid instance as retri and see how much white hits contribute to your overall damage afterwards in any decent damage log/meters mod. 45-55%?

Those are attacks that gain nothing from Spelldamage and only Str/AP and you can smack another 10-15% from Windfury (white attacks) if you have a Shaman in your group using that.

Now regardless of group combo, boss mitigation or whatever (with the rare exception of AoEing mass mobs with consecration), Str/AP will always contribute much more to your overall damage (as retri) than spelldamage, simply due to the tools/attacks we have as a class.

The other(Gold WoW) undeniable fact is the previously mentioned itemization, stack up pure spelldamage kit and you'll ultimately lose a lot of melee crit/hit and gain useless/semi-useless spell crit/hit.