Hello again Mary,
I hope you are not spamming or promoting Universe LED lights here in our forum.
Just in case you are not, the Universe 'Core' series is a Chinese production, and I have never tested one, so cannot vouch for the product.
But, in reference to your initial question regarding Metal Halide vs LED - refer to the example below:
A 900 watt consuming LED from Core will compete with 1800-2500 watt Metal Halide. Generating 130 lumen/watt, with a total lumen output of 117,000. Hope this helps.
LEDs will save your stadium a lot of energy cost.
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