That situation is a bit unlikely, VS. two 70 rogues who know what they are doing, one mage would not be alive long, let alone casting something besides instant spells. And lets say that did happen, If I were the rogue I would use blind/ shadowstep/ cos/ and deadly throw before I try and sprint at a mage.
On another note, for raiding I am specced arcane / fire and I almost never oom. With the intell increase of arcane tree I have up to 12k mana to burn through then another 7k with evocate and my gems and mana pots so I have a good 20k mana at my disposal in a boss fight and I am generally 2nd or 3rd on the dps meter (below warlocks)
EDIT: This is a response to one of the earler posts btw.
On another note, for raiding I am specced arcane / fire and I almost never oom. With the intell increase of arcane tree I have up to 12k mana to burn through then another 7k with evocate and my gems and mana pots so I have a good 20k mana at my disposal in a boss fight and I am generally 2nd or 3rd on the dps meter (below warlocks)
EDIT: This is a response to one of the earler posts btw.