They are the same game system. It's called Traveller. If you can manage to read the name of the game on the cover of your books, it should help clear this up. Also, they both involved using dimensions versus using only volume. If you can't see that, then maybe you should have your mom or your hospice nurse read it to you.
It is an insane deflection only because you don't seem to understand it. J-Drives, M-Drives, Fabricators, Sensors, Turrets, Bays, Cargo. Literally everything in MgT2 Traveller is based on volume and not dimensions.
Nice attempt to gaslight, but you are not smart enough to use actual facts. Go read the books again.