Charlie Hodgson believes a policy of bringing through young players is more sustainable than the approach of Top 14 clubs.
As Dan Carter watched on, Racing 92 ran in three tries to beat Toulouse 28-13 and move into second place in the Top 14.
Following their victories in round one, Racing 92 and Toulouse made in two wins from two in the Top 14, while Montpellier lost to Pau.
Stade Francais made a winning start to the Top 14 campaign, beating Pau 34-18 in Paris with the aid of 14 points from Jules Plisson.
Racing Metro produced a superb second-half fightback to beat Toulon 27-22 at Stade Moyal in the opening fixture of the new Top 14 season.