Well, I tend to be conservative, like setting touch of death's DPS at 60, when it probably does that on epics with low-WIS builds
The calculator is missing quite a few things, but like all models, it is a useful tool for comparison, which was my problem with the above complaint about it not being accurate. Of course it's not accurate! The only way to accurately judge these build would be to build them, gear them out, then go through all the raids 10 times or so with FRAPS on and then go back and work out the numbers, and I'm certainly not going to go through that much trouble.
Anyone who has been in raids with decently-geared and well-played STR ninjas know that they have "high" DPS; not max, but enough that threat mitigation is a necessity rather than a luxury unless you plan on tanking.
There is even a justification for monks getting equal DPS and extra abilities; they are not a free class.