Can switching to Geico save you money on your car insurance? Can a pair of owlbears TPK a 6th level party?
What is Sorcerous Power Strength? The only Sorcerous Power I can find on the Compendium is a feat that gives a damage bonus to arcane attack powers based on Strength or Dexterity.The Sorlock... well, he just has +3 from half-level, +3 from Strength mod (Sorcerous Power Strength) and +1 from magic armor.
Just a quick update: We didn't get to this encounter today after all, so I don't yet know whether it will be a good fight or not. We'll just have to wait.
I take it this will be a wilderness encounter? Make sure to give your players an interesting piece of terrain to fight over. One of the major failings of one of my DMs to have many encounters take place on a featureless plain. It gets boring fast in such an environment especially when I compare it to my other DM who has us fighting things in frozen temples, over bottomless pits, on rope bridges suspended over murky water etc etc. I am always amazed at the difference in enjoyment.
What is Sorcerous Power Strength? The only Sorcerous Power I can find on the Compendium is a feat that gives a damage bonus to arcane attack powers based on Strength or Dexterity.
edit: Alright. I'm guessing you have a Dragon Sorcerer, who is using Draconic Resilience to apply his Strength mod to AC.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.