Some questions.

1. Because it would change the variable of the equation. The first thing you learn in a science experiment is to only change one variable at a time. If you want to test DPS, the only variable is CLASS. If there were no equal funding, someone could say "oh well this NL gets all perfectly scrolled items, while this BM gets crap items," and then go around saying that NL's are better just because of that DPS where the NL had godly equips, and the BM didn't, when it is obvious that a BM outdamages an NL anyday.

2. Possibly. Depends on what class though. It may be bad to do so though, due to the fact that sometimes Pure Damage right off the bat =/= The best build.

3. Again, possibly, depending on what monsters you train on and such.

Hope that helps.