"And fountains of unsolicited advice poured forth"
@OP, if you're still around...
I'd imagine schizoaffective is misdiagnosed frequently enough, but full blown schizophrenics tend to have a lot more issues with quality of life, experience more cognitive difficulty, and have below average intelligence. Schizoaffective folk tend to have higher than average intelligence and increased reliance on divergent thinking. They're functionally different.