I think that fresh out of uni people feel like being a prima donna algorithmic wizard is the expectation so they play towards that sterotype. When you're looking at hiring more senior people they have usually accumulated the confidence to highlight how dev teams they've been a part of have worked together to overcome issues together without telling a personal glory story - those folks are worth their weight in gold.

Honestly, if someone walks into an interview talking about how they did something awesome to support a co-worker while they were struggling that's about the best anecdote I could hope to hear.