Depends how you look at it... I would say lippi as he done it in less time....
Lippi won 13 titles in 405 matches compared to Traps 14 in 596 games
Lippi had a 56% win rate compared to traps 53%
Lippi had a better offence with 1.7 Goals per game to traps 1.6
Though Trap had a better defence conceding 0.8 per game compared to lippis 0.9 per game