Warne had one of his best averages in England- those pitches actually help spinners as much as seamers. As he says- if it seams, it spins. England never produce roads, spinenrs do well in England, they always do.
Personally I'd call AB elite, BUT I would like him to stamp his class for 6 more months or so.
Broad is their 2nd best quick, he just is, and he is a genuine all rounder to boot. He will be there. Then it is up to the options for the 4th quick, Finn, Onions (injured from memory), Tremlett, Bresnan. Sure they have depth, but I would not call any of them much chop really, although I like Tremlett if he bowls like he did today (fuller).
England are not as good as you think either. I would rate them a 6.5/10 side, India a 7.5 and SA a 8.5.