Here we go again in Battle of Somma
Cycling is endurance discipline in which strenght will always play a larger role.
Ok, Dirtyworks did not mention maximum strenght he mention (muscular)strenght which is generally defined as the ability to generate force at a given velocity of movement, or force in a short period of time.
Fergie definition of muscular strenght is actualy from McArdle, Katch, and Katch, 1991, p. 452). which is by me wrong it is more a definition of maximum strenght, but again
If we are speaking of max strenght it should be means of the max resistance which can be overcome in one rep by developing max muscle tension in fibres.
So strenght can be subdivided in Max strenght, explosive, strenght endurance, dynamic, and static.
Cyclist can benefits from developing strenght endurance in dynamic pattern.
Static strenght should be avoid it cos is to unspecific and has negative impact on local muscle endurance.
Weight training should be a supplement to our training not the main body of it, but there is some correlation because of the force-velocity curve.
Where training relative strength as its more important than absolute strength for functional movement and in no way is developing hypertrophy advised throughout any training program for a cyclist.
Improving the ability of nervous system to synchronize the electrical impulses that cause the muscles to contract and act in concert produces greater capacity to generate power than does merely increasing the size of those same muscles, so we have answer of why greater legs are not always stronger.
Of course that works for me and i will not take "Big Bertha" out of garage.
Stay well!