How does Zhang's established 2013 success differ in scope from the Riemann Hypothesis?

Answer

The 2013 success involved a finite bound on prime gaps, whereas RH concerns an infinite set of complex numbers.

The 2013 success proved a finite bound on the gaps between some primes, while the Riemann Hypothesis is an assertion about an infinite set of complex numbers—the zeros of the zeta function.

How does Zhang's established 2013 success differ in scope from the Riemann Hypothesis?
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