You can read the parent article for more details. https://en.m.wikipedia.org/wiki/Buran_programme
A much better counterpoint would have been the Tu-4, which was in every detail a reverse-engineered B-29: https://en.wikipedia.org/wiki/Tupolev_Tu-4
The Tu-160 and B-1 are another example of this.
Another is that the engineers designing Buran were told to "make it look like US Shuttle" - only look, mind you, as outside of common shape the design is completely different.
One of the reasons I've seen for this order was to make a point to USA, though I do not remember the details. MiG designers were reportedly annoyed at the requirement, but still made it look like Shuttle - and be several times more capable than Shuttle.
It wasn't as reusable as the American counterpart, but if we did that with today's reusable boosters the way SpaceX does it, it wouldn't be that bad.
Remember, of course, what drove both designs was the capability to bring large objects back from space in a single orbit
It's really no surprise Buran was abandoned and the shuttle was bad at everything else (except looking good in pictures).