I don't know how much results come from the strategy of the DS... but Bruyneel has some great results for the teams he's worked for. And he's 45... it's not like he's been doing this very long. He didn't start until 1999.
He's been a DS for 11 seasons. In that time his teams have won 9 TDF's, 2 Vuelta de Espana's and 2 Giro di Italias. The teams also won 2 Dauphine Libere's, a Tour de Suisse, Tour of Romandia, 2 Catalunya's, 2 Pais Vascos, Gent Wevelgem, Ouest France Plouay, and a bunch of US races and other smaller European Stage Races that aren't "pro tour" events right now.
That doesn't factor in other high results... his teams have had a lot of podiums in big stage races as well as wins.
I'm sorry... but regardless of HOW you get there... 13 grand tour wins in 11 seasons is pretty exceptional results.
As far as classics... the wins arent' there. I don't think any of his teams have been focused at all on that though... they're pretty focused on stage races. Still... podiums at Gent-Wevelgem (2), Paris-Roubaix (2), Ronde van Vlaanderen, Dwars Door Vlaanderen, Amstel Gold (2), Milan-Sanremo, Giro Lombardia, and Ouest France Plouay aren't horrible results for a stage race centered team that rarely has more then one or two riders who are geared toward classics.