if you gonna be pissy about it.. here is "proof"
http://www.uesp.net/wiki/Skyrim:Armor
"While wearing armor, the strength of any spells you use are reduced."
nobody can check the math until the game is unlocked so they can check the editor.
That info is outdated, we already know that wearing armor does not reduce the strength of the spell, but magicka regen instead. Uesp is not a proof, especially with the giant disclaimer up top. A lot of the info up right now is wrong...give it a few months and it'll converge on a correct solution.

In OB there was a higher penalty for heavy vs. light, but the actual percentages allude me. I'd expect the same in Skyrim, but honestly I don't think it'll be that much...we'll see soon.
