I know this is pure speculation, and I am also conscious of the fact that we can't use the current numbers on the alpha/beta as an indication for where any of the specs will be once the dust settles.
Nevertheless, how do you THINK the specs will stack up against one another when it comes to pure DPS output in high tier endgame raiding?
Also give your reasons why.
e.g.
1. Arcane: 1,000,000 DPS - Based on previous tiers of raiding content, Arcane has always been the true glass canon spec with severe moility and AoE issues. I believe they will compensate this spec with big D DPS to make up for their shortcomings.
2. Fire: 973,000 DPS - Blizzard loves fire mages They will never be far behind Arcane on single target which is Arcane's niche and their AoE and cleaving capabilities will be godlike.
3. Frost: 417,300 DPS - Frost has never been a top tier Mage spec for PvE/Raiding. I don't foresee it happening ever. All the slows and control mechanisms still baked into most of the mechanics makes me reminiscent of when it was pigeonholed as a purely PvP spec. This is a shame since thematically and aesthetically I prefer Frost Mages.
Nevertheless, I will always min max and choose the spec which does the most damage to the boss.