==Bureaucrats Can==
Do everything a SysOp can plus promote and demote SysOps.

==Sysops Can==
# Block a user from sending email
# Block other users from editing
# Change protection levels and edit protected and semi-protected pages
# Create new user accounts
# Delete and undelete pages
# Search deleted pages
# View deleted history entries
# Edit other users' CSS and JS files
# Edit the user interface
# Have one's own edits automatically marked as patrolled 
# Mark others' edits as patrolled
# Move pages and their subpages, regardless of protection level
# View a list of unwatched pages

==Sysops Can't==
# Find out where you live and attack you. Yet.