AtomicMew wrote on Apr 7
th, 2016 at 12:45am:
Wizard does have better boss DPS and significantly stronger ruins. ~100 higher spellpower, +60% crit damage (+70% with a 3 warlock splash), 12-15% higher crit chance compared to warlock due to enhancements.
Wizard can sustain just fine thanks to just rewards - possibly even more so than warlock, due to free maximize hellballs/ruins etc.
DC casting does seem to dominate the kill count in raids, from my observation. Mobs fall down before you can even get in burst range. It doesn't matter if they eventually run out of steam, unless the other members aren't pulling their weight.
I was under the impression that you were talking about playing a DC wizard not a shiradi split. If you were to play a 12wiz/5fvs/3wlk, you could get a maximum of 14% additional ruin crit chance from the AM and AoV trees (15 if you take emt) and higher force spellpower* than a warlock would have.
The part where you're wrong is the crit damage. As a wizard splashing warlock you have a theoretical maximum sustainable critical damage increase of 70%, 60 from MoK and 10 from TS. In addition to that, you have a non sustainable boost to crit chance and crit damage for one round of ruins once every 1.5 minutes.
Realistically, though, you won't start most boss fights with 30 stacks of MoK. Depending on what content you're running and whether or not you like going invisible and/or running past stuff, you're probably going to have anywhere between 0 and 20-something stacks when you actually start fighting the red/purple name.
A properly built warlock has a 60% bonus to crit damage (which is equal to the amount the MoK will give if fully stacked which, again, isn't realistic in most quests at the start of the encounter especially if you aren't intentionally spending time doing it) without wasting time casting bad metamagics and worrying about stacks. It's also important to remember that warlock does a lot more damage during the 11 seconds between ruin casts.
Just rewards is fine when you're spamming magic missiles but it won't make a dent when you're casting meta'd ruins, and if you're talking about killing trash I can't imagine that you would actually believe that any type of wizard will kill packs of mobs faster or more sustainably than a warlock.
Here's a screenshot from the last time I ran a "raid, where trash mobs have ~30K HP on LH", which was a couple of weeks before U30. The group contained mostly ranged characters (shuriken builds, mechanics, DC casters). I am not a DC caster. I am not a ranged character. I did okay anyways.

*Edit - as far as the spellpower goes, you get a maximum of 90 spellpower from MoK fully stacked (which, like I already said, it generally won't be at the start), 30 from scourge, and about 30 more from AM and AoV than warlock gets from ES (~78 to 42 if you spend 74 in AM/AoV and 6 in TS). Warlock has intensify, which makes the spellpower approximately 198 to 117 or a difference of 81
when your buffs are fully stacked. Again, it's important to remember that your math was based on MoK always being fully stacked. Basically, if you don't just run to the boss you fall behind because warlock kills packs of mobs much faster, if you do skip trash and run to the boss you fall behind because your math is based on MoK and it takes a long ass time to get it stacked.
You'd be better off playing a 12wlk/wiz/fvs but even then pure warlock is better overall.