Originally Posted by Caliane

I would suspect you are very much fudging your numbers a bit.
When making these theoretical predictions, and actual in game numbers, the fact is, spellcrit costs more then spell damage per dps increase. You can look at gems to see 9 damage is equal to 8 crit in itemvalue, or 12 damage is equal to 10 spell crit.
Take those values and put them into the dps spreadsheet and you will find 12 spell damage is most certianly worth a good deal more then 10 spell crit in DPS.
These values are true for all gear at the zero value.
Granted as a piece of gear gets more and more of one stat, the price of adding more of that one stat increases, and such adding a second stat becomes more valuable.

For example, brute-cloak of the ogri magi 21 spell crit/28 spell damage. Royal cloak of the sunstriders. 44 spell damage. Similar int values. There is an inherent item level differance.
But this is the example. The 13 level higher royal cloak has 16 more damage vs the 21 spell crit of the brute-cloak. Despite the level differance, and the fact spell damage is inherently cheaper per dps gain, the cost of increasing the spell damage scaled up to a point where, it is questionable to which is actually better for you. In fact, the brute-cloak is likely better for most individuals with high spell damage.