Mcgee is not a smart player but he has height and can be a good defender if he tries yet he is a funny guy and mostly known for his moves on Shaqtin a fool. We know Lance from his weird moves and weird personality as well he is a different person.
Beasley has been made a joke like he is doing silly stuff and always high and so forth.
Yet, Rondo is not like that, he is a smart player, he is an angry player for sure but he is a smart player, he memorizes everything about every team and every player and works on that. Rondo and Lebron can be great.
Also lets not forget that Lakers still have Lonzo, Kuzma, Ingram and Hart as their young core, they can improve to a great teammates for Lebron.
Well even though been perceived as clowns, mcgee and stephenson has proved their significance in their own roles for their respective teams. You can't deny the fact that these, including beasly, can excel in a lesser team. Luke walton really have his work cut out for him since this lineup, if he manages to get them working together well, can be a serious threat in the west.
I think the is the difference and he is more confident now even if he is playing with other team because he already earn his first championship.