HaveQuick 2,
The Tornado GR4 simulator is a very significant upgrade on the GR1 - the all round visual system is pretty convincing. So much so, that it is deemed realistic enough that instrument ratings and many supervisory checks are conducted in the GR4 sim.
Whilst the GR4 simulator is pretty much state of the art, it is still a simulator. Screw something up in the sim and you may be a tad embarrassed over coffee - in the real world you screw up badly and you may advance to the pearly gates without collecting £200 if you pass go!!
The lack of adrenaline and lack of cues to the vestibular organs will ensure that simulators can never totally replace live flying. Be that Tornado or Typhoon. Besides, the GR4 sim is a Private contract - so unlikely that money could be saved by substituting Typhoon sim for GR4.
Regards
F.O.D