Tezeguet is a long way from being the best striker in the world. You only have to look at the team behind you in the league or the team that you lost to on tuesday to see that.
You can't make excuses such as 'it isn't his game' for that sort of play. Every football player in the world should know that when things are not going so well, more is needed of them. Look at all of the great players you have had down the years, most recently Nedved and Zidane. Even with all of their technically ability, they know that they have to work hard to win a game.
Strikers only having to score is an outdated mentality. It is every players 'job' to help their team win, if that means they have to make tackles and track back then that's what they have to do. Defence and attack are no longer mutually exclusive; everyone must share the load of both jobs.