Talk:List of champions/Attack speed/@comment-26443527-20160229163020/@comment-4091261-20160229191418

It's quite simple. There is a flat animation time for every attack. Attack delay shows you how long that animation lasts.

It's a lot easier to wrap your mind around if you flip and instead look at it as seconds per attack. The delay adds time to the attack animation and thus slows down the overall due to the extended time.