Tier 1
Schumacher 1992-2006 ( so refined, compared to mistake ridden contemporary drivers ),
Alonso (emotional, driven, talent),
Hamilton (most talent, still raw, not a great thinker, not perfected),
Tier 2
Button(solid, reliable, thinker),
Webber (fast, passionate, mistakes),
Vettel(fast, impetuous, mistakes!),
Kubica(not enough car, fast, intelligent, racecraft!),
Rosberg(good, gettind better, solid),
Tier 3
Schumacher 2010 (finding the old rhythm, but very slowly, doesn’t use simulators?),
Massa (heart broken? going backwards? mentally defeated?),
Barrichello (still quality driver, possibly revival this year),
Sutil (anonymous this year),
Kobayashi (raw, he wont be in this tier long)
Tier 4
Kovalainen (Should be in Tier 3),
Trulli, Hulkenberg, Heidfeld, Klien,
Tier 5
Buemi, Alguersuari, De La Rosa, Chandhok, Senna
Just Tears!
Yamamoto (Ramamoto), Petrov (Please be good, my gf is Russian!), Liuzzi, Di Grassi (as in, off on di grassi)
I added some of my feelings about the various drivers.