If you consider only the selection pressure from the mother’s side then yes that is the case.
However you must consider that the mother and the father are in an arms race with respect to the carrying capacity of the mother. The selection pressure from the father will always tend towards an offspring that is the maximum capacity at which the mother can bear.
However you must consider that the mother and the father are in an arms race with respect to the carrying capacity of the mother. The selection pressure from the father will always tend towards an offspring that is the maximum capacity at which the mother can bear.