From FO3 to Skyrim? Not so big.
From OB to Skyrim? HUGE!
http://thewormhole.nfshost.com/OblivionSkyrimCompare.png
I agree,the difference between those pictures is huge,like worm said.
Considering skyrim is made on the same ( outdated as some say ) console/consoles as oblivion was on,skyrim looks awesome.
It's a big improvement.I mean yeah,compaired to most PC's console tech is a bit dated,but in my opinion still good enough for games like skyrim and others.
Sales of consoles alone tell you that.
Also don't forget,they are always finding new technique's to squeeze more out of these consoles.
And not all PC's could run oblivion at full.
I'm no expert on this,far from it,but when people say consoles are holding things back....well it's true,but couldn't the same be said for older PC's too.
Bethesda has to take that into account too.
Yes you can upgrade them,but does everyone have the money to do that?....no.
PC users also have the luxury of enhancing their graphics etc,via mods and so on,console users aren't so lucky,but at the same time are satisfied with what they get.
Just my view.