1 handed vs 2 handed dmg

[Vidar]

I got a question about dmg. Lets say i have a lvl 30 sk. If i give him a 15dmg 30dly 1 handed weapon will that be roughly the same as a 20dmg 40dly 2hander? Do 2handers get a higher bonus dmg or anything? or is a 2.0 weapon a 2.0 weapon