You knocked the Cavs teams for not being elite as why he didn’t deserve to be MVP then, and then said that you want the best player on a successful team. Which is it?
Additionally, the Cavs went 66–16 (best record in the NBA that season) and 61–21 (best record in the NBA that season) during the 2008–2009 and 2009–2010 seasons respectively. Check out this squad of all-stars they trotted out in 2008. http://www.basketball-reference.com/teams/CLE/2009.html
Lastly, I could argue that his team was the best team from 2008–2014, although there were some years that their record wasn’t the best in all of the league.