If you have a lot of technical churn, and only test perf on Chromium, then you could certainly claim that the result is "unintentional", but it's almost guaranteed based on that circumstance.

I unintentionally burned down a dozen houses because I was too incompetent to properly test the propane systems I was hooking up to houses, but only the ones built by competing contractors that didn't quite fit my way of doing things. How can you call that anything but unintentional and how can you possibly hold me accountable?