http://justarsenal.com/its-official-fifa-announce-wenger-as-the-manager-of-the-decade/5645

He is a very good manager, especially with the limited funds he has to work with. Arsenal are 9th biggest spenders or something in the Premier league and the only pl club to record any profit (in 8 seasons out of 9) this decade.

Arsene also helped design and establish the emirates stadium and pay the debt back in about 5.5 years time (payed the last installment 3 months ago) all in the same decade. Most of the money came from transfer window profit and highbury square.
To win something is really down to your team not your manager.

You cannot expect Fergie to go to Accrington Stanley and win the league and FA cup can you?

Arsenal do not have a winning team, and when Arsenal built the stadium everybody said the team would be the first to drop out of the "big 4" but that has never happened since Arsene has been the manager.

The fifa stats are based on the managers qualitys not the actual teams, wether or not Arsenal win anything is down to their inferior squad. Wenger chosen for his manegerial qualitys like I said.

He also built the strongest EPL side this decade from a bunch of nobody's known as the invincibles of 2004.