Well Bandai don't have the license, Bhvr has that. And I'm not so sure Bhvr are indie considering they had so much funding for EC, also are working on Star Citizen AND they have a group or team of 400 people! Also, they never wanted to make the game open world in UE4, they switched to UE4 after they realized they couldn't make open world by making their own engine! Also in Deathwing, you really don't see huge open areas much nor is the map huge by the looks of it but I hope I'm wrong. But either way, because of that reason, can Deathwing look 10 times better than EC, simply it's optimization. Genome is also an Open World MMO and is way different so you can't really compare it to EC but I also don't know where you're getting at... the game doesn't look at all better than EC really, the gameplay might to you but again, that's not really comparable since it's 2 different types of games.
Dunno,people with far less powerful videocards has no problem with it. Moreover, the project is live and is being optimized and developed properly (hello EC with normal optimization in moth since "release". And yeah,look at the models first,they are better then ones of the EC.Models of Warhammer 40 000: Space Marine (session shooter 2011) are better,damn models of Planetside 2 (MMO of 2012 yay!)are better,sooo may be the problem is in devs hands?