QATs Q4_0 from Google have more precision than Q4_K_XL from Unsloth (at least some)

I wanted to try new QATs and opened two collections on HF (which HF found for me): https://huggingface.co/collections/google/gemma-4-qat-q4-0 https://huggingface.co/collections/unsloth/gemma-4-qat One strange thing caught my attention, for e.g. E4B: https://huggingface.co/google/gemma-4-E4B-it-qat-q