not true. some OC better, other have SLI, tipple SLI or Quad SLI, better cooling, etc.
By the way, Gigabyte, MSI, DFI are the top 3 brand I will choose if I am buying Motherboard
if you had infinite money and watend to run intel and SLI, buy the ASUS Striker... but motherboards in the same price range isnt really going to improve your frames....