Interestingly, if you adjust the thinking effort, smaller model gets better? At least with the weights this comparison is using.
https://aibenchy.com/compare/qwen-qwen3-8-27b-high/qwen-qwen...
https://aibenchy.com/compare/qwen-qwen3-8-27b-high/qwen-qwen...
Check other benchmark sites/videos too, they all said Qwen 3.8 27b is better on low than high.