Why a different captain might not save Graf Spee

Would Theodor Krancke have handled Graf Spee's predicament differently from Hans Langsdorff?

Probably not by enough to matter; discovery, damage, and the enemy's ability to summon reinforcements leave any isolated surface raider with very few options.

The differences between Theodor Krancke and Hans Langsdorff are judged unlikely to transform the outcome if Admiral Scheer faced Admiral Graf Spee's predicament. A surface raider retains freedom while its location is unknown and it can move without damage. Once it fights opposing cruisers, its position becomes known and damage can restrict its movements. The British can then summon additional forces, while the isolated raider cannot obtain equivalent reinforcement. Escape becomes its central problem, with few favourable options.