Aquashrimp,
They are actually very good dogfighters. It is true that they bleed energy faster, but the delta gives them higher achievable AOA before stalling. They are rather light/small, and their roll rate is rather fast. Agility is one of the strong point of the M2000.
Back in Ellington Field, TX, I briefly talked to a F16 Agressor pilot, who's one foundest memory was to intercept a couple of Mirage 2000 Ds (2 seaters ground attack) at Red Flag 95. He caught them a bit too late, they already blew the target up, and to his surprise rather than escaping, one engaged him. After a "short but epic" dogfight, he got "shot down".

Edit: Lepaul, notice the French refuel using the soft trailing hose, they don't use the boom like the US. I guess fighter pilots like to make their life harder.