He just saw it was using the oblivion engine and automatically declared "oblivion with guns" didnt even give it a chance.
-Using the Oblivion engine.
-Using an interface 100% identical to Oblivion's with the exception of VATS.
-Identical control system.
-Identical Inventory management.
-Identical item use system (infinite instant stimpacks used in combat = all difficulty destroyed).
-Identical (crappy) noncombat NPC animations.
-Identical (crappy) AI and pathfinding.
-Almost identical dialogue system (slightly decrapified).
-Reusal of (untalented) voice talent from Oblivion.
-Identical cell based map system (interior spaces are in another universe than outdoor spaces = myriad of exploits).
-Identical character generation system ( slightly adjusted for SPECIAL).Nice for the first time you start, gigantic pain in the ass every other time).
The game is still worthwhile, but I wouldn't call it "Fallout" with a straight face.