Inlets frontal area are way too small for the engine exhaust con-di nozzles.
If one wanted this to work, a reduction of engine size (regardless of their thrust) of 25/35% would be a lot better.
With the same engines as the mono engine, the TWR of such aircraft would be close to unmanageable.
The two engine are positioned WAY too close to each other although the inlets are well separated, and as SpudmanWP was pointing out, it would be limited in internal fuel by lack of space for the tanks due to double its original specific fuel consumption, fuel fraction is one hell of an important design point.
The interest of separation between engines is not only internal volume for fuel (F-14) it also increase the chances of survival in case of one of one shreading a turbine or engine fire (example Jaguar).
Keeping the same (wet) wing surface is also a mystake, not only would the wingload go down but also the structural load per wing, this leaves a lot to fuselage lift which is not what one is looking for for good turn rates.
Finaly, the "Artist" made a nice begginer's design fault, on the front view the fins are quanted outward, they are vertical in the top view.
These are better done on 3D where such details are not a problem.
My conclusion:
Climb rate of a Saturn V, Turn Rate of a F-105, short legs.
Thunder Supports Rafale
http://rafale.freeforums.org
http://rafale.freeforums.org/rafale-vs-f-16-aerodynamics-compared-t69.html