Brazil defender Thiago Silva, signed in January but ineligible to play competitive games until the season starts in August, will replace retired centre back Paolo Maldini but otherwise Milan have only recruited promising youngsters.
"No one in Italy from a technical point of view has a squad as strong as ours... not even champions Inter," Berlusconi told Gazzetta dello Sport.
The Rossoneri, third in Serie A last term and without a scudetto since 2004, hope to sign a striker soon with Real's Klaas Jan Huntelaar, Sevilla's Luis Fabiano, Arsenal's Emmanuel Adebayor and VfL Wolfsburg's Edin Dzeko in the frame.
But Berlusconi said Milan would not be pressured into paying overflated prices after Real splashed out 67 million euros on playmaker Kaka and a world record $130 million for Manchester United's Cristiano Ronaldo.
"Soccer should return to normality," the Italian prime minister said. "We should not buy at any cost."
"If Madrid have these possibilities, good for them. We are fine, because they gave us 67 million so I can't attack them too much," he joked.
Berlusconi reiterated he wanted to keep the pair and backed new rookie coach Leonardo as "the man to open a new cycle".
"The truth is Milan remains an affair of the heart, I will not sell for any figure," he said.
