Why is max damage important? Unless there is a reliable mechanic for triggering max damage - which as far as I know there is not for most spells, which are save based rather than attack based - then max damage on a spell that involves rolling 6d8 or 10d6 or whatever is basically irrelevant. It is sufficiently improbable as to be ignorable.Forum maths is about as reliable as my guesstimations based on 20 yrs playing experience, there are too many variables to take into account, and working by averages or medians ignores potential max damage, which is also important.
For the high-level Evoker max damage ability, [MENTION=7635]Remathilis[/MENTION] checked the maths upthread and it didn't make a huge difference.