Well, they (GStaff) are giving a little insight as how is that the 360 version runs.
If you check that section about the texture problem when installing to the HDD, the game basically running / relying on their cache system reading from the DVD drive (which they DENIED at first, that IT DIDN'T matter if it was running from disk or HDD).
So PS3's Blu-Ray does differ from this by having a mandatory HDD install, I supposse because of the "allegedly" "superior" processing power of their hardware (which might been true SIX years ago).
It all comes down to Bethesda's arrogance at the corporate level :
Why spend money on good programers with better skills thus raising yor production costs when you can use that money to market your product to a wider demographic and therefore increase your revenue ?
Sure there will be a 10 to 25% disgruntled consumers that will see right through it, with half of those raging over, but guess what ? IT WORKS, seven millions shipped , 3.5 millions sold and more to come...
They already have it all worked out Oblivion, Fallout 3, Fallout New Vegas, all of these resulting in a financial succes; Brink/Rage (kill your competition by buying their souls) dead before they even got a chance to shine...
Sad but true....
