John Dean has written a fine analysis of George Bush's presidential style from the perspective of political thinker James David Barber. It's
a very good read and highly recommend it.
For those who want the short version, essentially Dean categorizes Bush as an "active negative" president. Other such past presidents with this type include Jefferson, Wilson, Hoover, Johnson, and Nixon. If you look closely at those players, you can see that none of them had a good end as Presidents. In short, all rode losing policies to the bitter end, with terrible results for the nation.
Go read the whole thing for a deeper understanding that is spot on.