DrunkenMage
Intoxicated Arch-Mage
Was more because they couldn't attack, they could only defend Cyrodiil. Aldmeri Dominion still controlled Valenwood and Elsweyr and southern hammerfell, would have to occupy them and send forces to Hammerfell to help there. Empire couldn't go anywhere. War would of lasted at least another 20 odd years. Just defending two provinces lasted nearly 5 years, another 5 for the Redguards. Empire had lost too many legionnaires for that kind of invasion.
Dominion did well during the opening fight, their army was ready and mobilized in Valenwood and Elsweyr. Imperial army was spread out across Cryodiil, Skyrim, Hammerfell, High Rock. They don't have phones, communication is done by courier, so when the dominion hit, The legion had to mobilize their army. Would of taken awhile. Legion was caught very off guard by the sudden surprise attacks.