Thief %/s (KMS Unlimited and GMS Tempest)

The calculations per minute and per second WOULD be different depending on where you were and the circumstances.
You can't even argue with this.
Again, you need to hit 60 times in a minute, you cast at a 1001 MS, you will only hit 59 times. It is not 59.x, it is 59.

Unless you are fighting a strictly-1-minute target, it is indeed 59.x and not 59.