Do wizards do decent for solo if needed?

[Raavak]

I can't prove it but I think I mostly solo'd my cleric to 50 faster than if he had been grouped. Groups wipe, chew through all available mobs, puller and tanks go afk, you split experience 6 ways... Give me a nice undead spot by myself and I'll churn out the levels.

Of course my wizard solo'd almost exclusively (near impossible to get a group) until mid-50s then got into AE groups. Steady quad exp isn't so bad... just have movies, Facebook, or a book or something for med time. 51-56 took forever, then I was 60 in no time.