I mean if you look at the Australian side at what I guess most people would consider at its absolute peak, it was this:
Get cricket scorecard of 1st Test, AUS vs NZ, New Zealand tour of Australia 2004/05 at Brisbane Cricket Ground, Woolloongabba, Brisbane dated November 18 - 21, 2004.
www.espncricinfo.com
Obviously, Clarke was not yet the batsman he would become. But, even accounting for form, that top seven is leagues ahead of everyone in world cricket right now. Had some very decent batsmen waiting in the wings too.
Yeah ATVG is about where I'd put them. They'd trouble everyone, but ultimately I feel they're still a bit too, well, beatable, and obviously haven't done it for anyone near as long to be classed in the true top tier.