Any side of the brain for stroke is equally bad because your brain controls your entire body by sending the signals through neurons. So, if any side of the brain is impacted through a stroke, the actions responsible for that end are hampered. If every corner of your brain suffers from a brain bleed, you are considered brain dead because your brain is unable to communicate with your body organs (you can stay on machines for years with a lack of hope and no possible signs of recovery)