For most views, we’re not offering tabular layout just now. It’s not a bad idea and perhaps we should offer the option. I’ll mention it to our team. You can, as you’ve noted, look at tabular data via CSV.
A much-requested feature has been raw data access, which would allow you to build queries any way you’d like. We’re not yet sure when this will be available. That said, you can today look at two custom events side-by-side in the Data Explorer (though you can’t actually construct ratios per se).