All the more reason that first officers should be trained regularly in the simulator to conduct rejected take offs from the RH seat - and not just once every couple of years as an incapacitated session, either. The F/O should be given the same number of rejected take off practices as captains get in order to meet the same competency standards.
You will note also that few airlines in Australia who use simulators for recurrent training, ever have the F/O die (incapacitated) on the take off - its always the bloody captain who gets to go ape and kark and the poor F/O gets canned if he doesn't get the abort right first time. Blatant discrimination I call it....Where's the Federation's position on this vital facet of flight safety?