[jamesaguilar]

I think you should not ignore either. By default, think about 99%ile and 50%ile when tuning and optimizing. Depending on the context (e.g. games), even 99%ile might not be enough, or you might want to think about 99%ile of what? Frames? Scenes? Seconds of gameplay?

Also, back to the topic of the article at hand, I hope that their "T" is not really two seconds. That is already way too slow for most web purposes.