Are old trucks worse off than new ones?

Hello, I once Googled a little and found only comparisons between new vehicles, e.g. here: http://www.4wheelfun.de/…/…offroader-kommen-durch-3958573.html?… But unfortunately I found nothing where old (i.e. about 20, 30 years old) can be compared with new vehicles to be suitable for the ground. Does anyone know a link or has their own experiences with old and new vehicles? Is the modern electronics really so helpful or have old vehicles also Vort Eile? Which of the old vehicles are really good at the venue? Do the legends say that Mercedes G and Toyota Landcruiser are the best? Gruss Desperado