IMO
Wide pitch - best for wingers and playing wide.
Narrow pitch - best use if you prefer to play through the middle or without wingers. Not really suited for playing sexy football in the middle of the park as there's not much free room.
Long pitch - DominicForza has got it spot on. Ideal for the counter attack
Short pitch - Use this if you play the short ball game and like to build play up from the back, e.g. the "Continental" style.
These are just my thoughts on the pitch size and could be wrong as I'm only an armchair football expert.