When styling the ActionBar text using a custom layout we get the choice of normal and bold fonts which do not match the font weight when you set the title in the ActionBar tag as such:
<ActionBar title="John D'oh"></ActionBar>
Custom layout with font-weight set to normal:
Custom layout with font-weight set to bold:
You can see it is impossible to match a custom layout to the standard layout. I kind of feel like Goldilocks three bears, normal is just to skinny, bold to fat, but standard Android layout is juuuust right… and yet out of reach if you have to use a custom layout at all.