The Invoker and Druid are far better controllers IMHO and I agree with Morrus - expectations of 4E wizards vs. the reailty is where the feeling of 'meh' occurs.
Isn't the wizard regarded as 2nd/3rd most powerful class in system?
I mean... Shield, Wizard's escape, Visions of Avarice/Ruin, Summon Succubus ..., ..., Steal time, Legion's hold, Visions of Wrath.
Wizard probably has the best utility, encounter and daily power at each level in the game. Only wizard's features suck