So i heard from somwhere that the ebony blade despite being a two handed weapon has its base damage determined by the one handed skill. Does anyone know if this is true?

http://elderscrolls.wikia.com/wiki/Ebony_Blade_%28Skyrim%29

Yeah its governed by 1hand damage perk, but increases 2hand skill and uses the 2hand decapitation perk

Full details:

http://elderscrolls.wikia.com/wiki/Ebony_Blade_%28Skyrim%29

Huh, i wonder if thats a glitch or if it was intended.

Its already been proven its a glitch, its just one of many armor and weapon issues.