What undid the Spee’s effort was that Langsdorff ignored doctrine and used split fire—one turret against Exeter and one against the light cruisers. If Scheer cocentrates her 11-in on B, she could make the approach hell. I believe Scharnhorst scored at extreme range on the Glorious. German optical sights might compensate for lack of a superior fire control radar.
Training would be a primary factor. Equipment is only as effective as the operators who use it.