Excessive Damage Creep

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2586408085/235158654?tab=overview Neither Ashe or Fiora have any armor pen or %HP damage items yet I died in record speed as a 12+ stack Cho with

I was the most fed one out of the team and not behind at all. Death @5:00 was a failed gank mid w Thresh roaming, my fault to commit too hard and no Thresh MIA Went on to hard gank multiple lanes, outfarm Gragas, get RH and all the elemental dragons.

Late game comes despite being a late game stacking monster champ and all while being grouped for teamfights: Death @34:30 in 4 seconds was just vs Gragas and Fiora, Fiora did 25% true damage w ult from hitting 2 vitals Death @37 was vs Thresh, Gragas and Ashe. Made it from their outer mid turret ruins to the mid river entrance before I died in around 5 seconds Death @39 was vs Thresh and Ashe who is able to drain tank my full combo to stay above 80% Last Death @43 in our base vs their entire team with focus fire dropped in 2 seconds despite my 6k+ HP and actives. Died within the time of a Gragas bodyslam

I get I'm not supposed to be unkillable, but this is just fucking ridiculous.