I think it's just statistics... I was at 9k, AI at 5k, I still thrashed the opponent. You have to have a huge number sample to draw conclusions. Great game!
1) Pick Virus 2) Start in Canada, Greenland, New Zealand, Cuba (if not, restart) 3) Sell starting symptoms (if any), other than sneezing. If you don’t have sneezing, buy it 4) Buy 1-1-1-0 Resistances 5) Once your disease spreads to a few countries, sell sneezing to get rid of visibility 6) Wait until all countries are infected. If Madagascar closes or this is after day 30, restart 7) Pump 4 Drug Resistance and buy sneezing, coughing, vomiting 8) After a few days, unlock tier 2-3 keeping whatever symptoms it gives you 9) Buy fever, fatigue, diarrhea, pulmonary edema, hypersensitivity, hemorrhaging 10) Wait until everyone dies IT WORKS!!!!!! COPY AND PASTE IF IT WORKS FOR YOU. CREATED BY: MonkeySmartGames... ALL WORK WAS DONE BY HIM!!!
 "Monster Match"){kind=icon}
 "Death Snipa"){kind=icon}
 "Parking Mad"){kind=icon}
 "Dead !"){kind=icon}
 "Zilch"){kind=icon}
 "Factory Balls 2"){kind=icon}
 "Storm the House 3"){kind=icon}
 "SHIFT 3"){kind=icon}
 "Shooting Plane"){kind=icon}
 "Basketball - NBA Spirit"){kind=icon}
 "Tactical Assassin Substratum"){kind=icon}
 "drag"){kind=icon}
 "move"){kind=icon}
 "Demon Solitaire"){kind=icon}
 "Amorphous+"){kind=icon}
 "Pandemic 2"){kind=icon}