But there isn't a supercollider, compared to the SSC. It would have
been much more powerful than CERN's LHC.

Would - Coulda - Shoulda. It's easy to sight what might happen. Without the proof the proposed SSC could have been a bust as well.

The SSC was likely doomed from the start. There was no good reason - other than GOP preference for Texas - to create the SSC completely from scratch. Had Congress stuck with the earlier proposals to expand the existing accelerator in Illinois the savings may have been enough to win approval.