I know I'm very late to this party, but I've only just found a comparison from last month between Diapet's James to a Plarail one. As Super thought earlier, these models are much larger than Plarail/Trackmaster, H0/00 and ERTL.



Those knuckle couplings don't look like they would last very long, but I dare say the only way to know would be to wait for rolling stock to be introduced. Needless to say, these make the Plarail/TrackMaster versions (even the good ones) look cheaper than we all refuse to admit they are. I never understood why Nitrogen didn't keep James' proportions and scale at least roughly the same as his physical models.