The difference in soloing between the two classes are minimal now, just grab a healer merc and know your limits
Dark is right, when it comes to solo content, just grab a healer merc, since the content was designed so that even a templar could do it.
It's all pretty much out of date (Stops at level 90), but it's use able as a reference at the very least. Clicky here Then compare it to wizard as well. AA choices are something to consider looking at as well, for those there's various threads links etc that you can follow.
You can go to a site like EQ2U & do a search for wizard & one for warlock, pick a character from the list & look at their spells. You'd be able to see the high end spells. It doesn't matter what level the character is other than if you pick a lower level character you will see all the lower level versions of the spells as well as the high level ones & when they get replaced by a higher level version. Examining the spell will always give you the master quality information.