At that time, people took wrestling far more seriously. I don't think it could pass over as anything much these days. It was legit shock back then. Just look at Punk's rant. Sure, it was the talk of the town at the time, even gets mentioned here and there, though I don't see it much, but, I don't think anyone will be talking about it in 10, 20 years like they do with the Montreal Screwjob. Nothing could ever compare to the impact that had on the wrestling world, it was just so huge.
It obviously wasn't the only screwjob that ever happened, but, it is certainly the most talked about. I guess just basing it on my years of watching wrestling and how much it has changed, I can't see any kind of screwjob ever being as big or seriously taken as previous ones (as someone has already also mentioned Wendi's screwjob, though it isn't talked about as much, either).