I’d be sensitive to your different experience (After all why would I invite you to interview if I didnt think you were in contention), but I’d need reassuring that you make up for any gaps in skills by knowing something else relevant amazingly well, and by demonstrating how quickly you can learn new skills
I would also expect that you have done your research, and know about the working practices in my system.
For example, in the UK, asking "What's the REF?" or something like that would be an excellent way to be categorised as "Unappointable."
Good academic jobs are rare, and can offer remarkable career possibilities & perks (yes, still!), and I think you have to do your due diligence. In my view it's not really good enough to say "that's not how we do it in my country" if you want a job in another country's system.
So do your due diligence, because you also need to know whether it's a system you want to work in.
Your responses "it's not a metric where I work" wouldn't cut it in interview for me, unless followed by "However, I see that your Department has already got some funding from Horizon 2020 in field X, and I'd be ready to develop a grant application in field Z to complement (or build) on that success. I have experience in doing Z and I would use this to develop a collaborative project etc etc"
You're not applying for a job in the system you're currently working in - you're seeking a post in a system which values external funding. Do your research about the Swiss funding system, and then as @impostersyndrome suggests, think about some low-hanging fruit/easy wins in your field, that you could deliver, and would fit with the research strategy of the department/unit you seek to join.