Done right IMO, you will end up using more mg/wk during the off-season and a larger variety during contest prep. Now the difference in mg/wk may not be that big, depends more on the guy and what he's doing, what he knows, what he knows about his body, etc.
For instance, a good off-season cycle:
Test-e or cyp
Decca
Anadrol
A good contest cycle:
Test-e or cyp
EQ
Winny
Tren
Prop
Obviuosly HGH and other type things could be added to either, other often used drugs during a contest prep could be added, i.e primo, anavar, masteron, etc. Also during the contest time most guys will be using some or all of the above: clen, t-3, AI's etc