You're comparing apples to oranges there. Qwen 3.5 is a much larger model at 397B parameters vs. Gemma's 31B. Gemma will be better at answering simple questions and doing basic automation, and codegen won't be it's strong suit.
I'm not sure if I can make the 35B-A3B work with my 32GB machine
You won't have much RAM left over though :-/.
At Q4, ~20 GiB
So far gemma 4 seems excellent at role playing, document analysis, and decent at making agentic decisions.