One is the best player in the world while the other is an unpredictable whirlwind.
Lee "Faker" Sang-hyeok and Seong "Huni" Hoon Heo have been teammates for only a few months now, but you can already see the changes in Huni's playstyle. SKT is well-known for taking highly talented Koreans and molding them into fantastic players.
That would include the Lucian top laner Huni.
Poor Huni, never feed the Demon King. It' bound to get you killed over and over again. In his defense, he doesn't get good picks into Faker's champions.
That still doesn't explain the unnecessary deaths for overextending.