It all boils down to how these measurements work. In practice, the vast vast majority of LED bulbs do not even remotely come close to the color reproduction of halogen. Not to mention the flicker response to 60hz wall power.
There are a handful of companies that produce extremely color accurate LEDs but they're expensive and have limited lifespan.
Check out this resource for more info: https://www.waveformlighting.com/tech/what-is-the-difference... https://www.waveformlighting.com/tech/calculate-duv-from-cie...