Tim is exceptionally intelligent, both in terms of technical ability and emotionally. When his parents were held hostage, he stayed behind and allowed Batman to rescue them. When King Snake came to Gotham for a rematch, Robin allowed Batman to handle it n combat. He became Robin feeling that Batman needed a partner to balance him out, and retired from the rle fairly convincingly until War Games came around.
When he's applied his intelligence in combat, he's beaten King Snake (second most dangerous martial artist), KGBeast and Shiva in a sparring match. He's defied Batman's orders to save him from Scarecrow too.
Unfortunately for Spoiler, for almost her entire career, she served as a foil to show the abilities of others. Tim's good choices outweigh hers by miles. Yes, Tim's placed himself at risk, but he's also never overestimated his ability or leapt without looking.