WordPress
Supports styles such as H1, H2 in editor
Allows for easy excerpts
Images stored with blog
+ Supports pages
+ Supports categories and tags
Setting for links to open in new tabs
Despite lack of widgets there is a lot of different things that can be embedded using the Media button
There is a gallery shortcode
Blogger
poor support for tables ~ well you must play with the settings
no revision history
no revision history
not sure about how it handles imports from Microsoft Word
Change style sheet freely
Great choice of widgets
Images stored with individual authors accounts