Since warhead power is more or less directly related to weight as well - it's not even sure the warheads on JL2 is around 1MT range.
If, for example, lowering the warhead to 300 kt can yield 350 kg in weight savings, (modern US warhead weight to yield ratios used) and if such weight savings can result in several hundred km of longer range - i would think the PLA would choose range over yield, in the specific case of JL-2, which seems to be more range challenged than DF-31A.
If, for example, lowering the warhead to 300 kt can yield 350 kg in weight savings, (modern US warhead weight to yield ratios used) and if such weight savings can result in several hundred km of longer range - i would think the PLA would choose range over yield, in the specific case of JL-2, which seems to be more range challenged than DF-31A.