So the missiles were dizzy?
Nero himself seemed to be. The amount of force he used to disable the Kelvin
originally may have been excessive, due to poor targeting and poorer damage assessment. After killing Robau, he paid undue attention to the shuttles. And after that, the Kelvin
was too close.
Plenty of reasons why the Kelvin
engagement might have been unrepresentative of the optimal combat capabilities of the mining platform, then - and this is relevant basically because Nero then had 25 years to plan for an optimal use of his definitely less than invincible assets.