You're mistaken. These aren't "my" standards. They are the English VA industrial standards as of 2008.
Check these out:
Valkyrie Profile: Nibelung Velesti:
http://www.youtube.com/watch?v=MMmsRQ-NehY
Tales of the Abyss: Jade Curtis' Indignation
http://www.youtube.com/watch?v=A-D3gRs9aEs&feature=related
Tales of the Abyss: MasterLL Mystic Artes exhibition (English voice)
http://www.youtube.com/watch?v=oLwmf8YuC1M&feature=related
Here's the difference:
these actors/actresses use different tonality to pull off bravado, as it should be in the heat of battle. IU's voices are weak, one tone voices that are simply reading the script as opposed to acting the script. Even if someone were to creatively suggest turning up the volume, all you're getting is the same flat-toned voice, just louder than before.
If you're bothered to find other good examples, head to the previous thread. I highly endorse Raziel and Kain's voice actings in Legacy of Kain, or DQ8's voice actings. Admittedly these aren't battle voices, but those are the gauges I use when evaluating IU's voices, or rather, giving any voice actings a grade. I seriously have doubts about paying for such shady voice work when other voice actors put all their effort into doing something better.
Can I buy IU without being charged for the voice works? That's wage equality to the others who are paid industrial prices but put in more soul and effort than what IU's VAs are doing.
Well, you're probably right that I'm prejudging. We'll see if the rest of the script demonstrates higher standards than battle voices in due course.