i'll politely pushback a little. i think it's safe (at this moment in time) to say: playwright wins the first derivative, but selenium wins the "area under the curve". selenium is very entrenched in many parts of the world, especially outside of SF/USA. part of the inbound interest i've been getting for vibium is from those selenium users who want some kind of bridge to the future, but didn't have an obvious path forward beyond "dump selenium, adopt playwright"...
part of my plan with vibium post-v1 is to give that massive (and it truly is massive, i'm not bragging) installed base of selenium users an upgrade path to more agentic coding options.