The same technique in both markets
Before you conclude, what differs between the two
A round trip costs 0.2% in crypto (commission on both legs) and about 0.009% in forex (a 1 pip spread, crossed once) — twenty times less. The detection floor is 0.97% against 0.092% — ten times less. And the universe is 540 pairs against 2. A technique can pass in forex without anything about it having improved, and can land inconclusive there simply because it took 88 trades instead of 8,600.