Gorillaz - Re-hash chords

I dont see how anybody could think the progression is A-G-A-G-C#-b, but somebody did

The chords are simple. For the verse atleast.
[ Tab from: http://www.guitaretab.com/g/gorillaz/295784.html ]
       
       G         A      G       A
it's a sweet sensation over the dub
  D     C#m                  Bm    A
i wanna situation, but don't wanna stop
it's the drugs for sober over the dub
with the sweetest inspiration, don't wanna stop