How similar were the methods of Bismarck and Cavour in the unification of Germany and Italy?

Although Bismarck and Cavour had similar goals (to unify
their respective countries) they pursued their goals in relatively dissimilar ways. 
Bismarck used aggression and force, while Cavour used diplomacy and
moderation.

Cavour's state of Piedmont was not really in a
situation where it could unify Italy by force.  Therefore, Cavour had to find other ways
to unify Italy.  Mainly, Cavour did this by making political deals with other, stronger
countries.  For example, he used diplomacy to get Napoleon III of France to support his
aims.

By contrast, Bismarck's Prussia was strong enough to
use war to unify Germany.  Bismarck was able to use war to force other German states to
unite with Prussia.  Finally, he was able to fight France to get the last parts of what
he felt should be Germany.

The different situations of
Italy and Germany, then, forced these two leaders to use different methods to unify
their countries.