Leading into Friday’s thriller, the reigning premiers had won eight of their previous nine games to be one of the form teams of the competition.
King said the likelihood of hosting two September contests at Optus Stadium gives the Eagles a major boost over rivals.
“West Coast are going to get, in my opinion, the luxury of two home finals,” King told SEN’s Whateley.
“It’s a massive advantage.
“It’s a huge advantage, and it’s going to challenge one of those other three or four teams to come to Perth and get the job done.”
Geelong, Collingwood and Richmond round out King’s current top four.
Gerard Whateley’s top four consists of Collingwood, Richmond, Geelong and West Coast.
The Eagles will look to bounce back when they take on the Demons in Alice Springs on Sunday.