It's not as if anyone was expecting General Relativity to fail the test. Gravitational time dilation is a thing observed since the 1970s, atomic clocks have compensation for altitude and gravitational potential applied to them and that's part of the TAI and UTC standards we use every day, knowingly or not.
On the other hand, Einstein lost his vendetta against Quantum physics, badly, since Alain Aspect's 1980 experiment showing Bell's inequalities are violated.