Bosh was not a top 10 player on the Heat. Please post his NBA Finals averages those 4 years. No one knew or predicted them to go to 4 straight and every year there was an east team predicted to knock them off (Celtics, Knicks, Pacers, Bulls, etc). Its easy to say they were supposed to go to 4 straight Finals after the fact.
Kyrie played sparingly against the Hawks, and was not needed. Against Golden State yes he was absolutely needed. So yes the level in comp from their conference foe to their Finals foe was huge that year, but cats been saying this East is weak stuff since 2012 long before that. I still dont see how a conference that got half the chips this decade is "JV" to the other?