Do you lead with numbers or buzzwords on your portfolio?

We built dev-impact because we kept seeing dev portfolios full of "improved performance" and “drove growth” with no numbers.

What's the one metric you'd want on your portfolio if you could only pick one? (e.g., "Reduced API latency by 40%”, "Shipped 12 features in Q3", "Cut infra costs by $X”)

Curious what devs actually care about when they read each other's work.