Not really apples to apples.
Even your source in OP say the LOCAL STUDIO MANAGEMENT was disappointed, Sony management never said anything about the title. And whoever gave the rumor of the sequel pitch being denied wasn't Sony central making it public.
And truth be told, neither GoT nor DG needs a sequel their story was self contained so I'm good with both studios making a new IP.
Also as people pointed out, the Directors Cut, the Legend and the DLC for GoT plus it being well received by midia, fans and alike all put it in a very different situation from DG (which I liked a lot, even with the moronic bike mechanics, and technically GoT is much superior). So really it isn't a surprise why one is better viewed then the other, besides DG was a bet from Bend to enter AAA on console space (they were doing spin off on PSVita before that and their last great IP before DG was ways back) while Sucker Punch have been receiving constant good reveal and results, so let's say Sony have more confidence.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."
