It was. The Cavs barely got by the lowely Pacers this year and the Celtics who were missing their 2 best players. All the Cleveland teams Lebron has had would have struggled mightily with the bad boy Pistons, the Ewing Knicks, or Reggie's Pacers.
Lebron is great he's just not the GOAT. His finals streak is impressive but he's played in the least his entire career where most seasons 4 of the top 5 teams in the league were out West.