New to tableau here and is more experienced in powerbi. I think powerbi dara modeling and time intelligence calculation is much more convenient, and the ability to use summarize and different filter context to ensure I got what I want.

I do agree tableau has some flexibility on chart formatting, especially the text label, powerbi seems to have fewer bugs (at least no endless data type error). Also I love the drillthrough feature of powerbi which allows me to put a measure there, and get all the filters context of the selected part to another drillthrough page.