I think that's a fair assessment, and I'm going to be updating the guide to suggest Incin over RoF.
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Your player haste value is the haste value you see on your character sheet, but as a decimal. For example, 100% haste is a value of 1 in the spreadsheet. 33.53% would be 0.3353.
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Care to share the calculator? I'm curious how you approached the problem.
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Yup! Correct.
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I recently had to play on a connection that was around 200-250 ms, and backdraft was a terrible experience. Even with optimal timing and no movement I was only able to get 2 casts of Incinerate per Backdraft.