Look at milan before berlusconi era, you'll understand.
Well, of course they were better after Berlusconi took over, since he invested a lot in the team and bought the best players.
Their CLs from '89, '90 and '94 were well deserved. They were by far the strongest team on paper, they played the best football (not in '94, though. In 1994 they were tactically the best) and no other team but Milan deserved those CL's.
In 1993 they were also the best but unlucky in the final. In 2005 they played the best football in Europe but again they were unlucky in the final.
In 2003 and 2007 they might not have been the best but they were among the best and they had the luck (together with all the other ingridients needed) to win the CL.
I guess you talk about their CL from 2007?
I agree with you if that's what you think. Berlusconi played a huge part in Milan winning this CL because without his media power and the CL rights his company possessed, Milan wouldn't have played at all in CL that year. He bought them that CL participance when in fact they should have been suspended from CL, as they were initially.