Mike wrote:

Not so. In Class B airspace you're separated from other traffic. In a
MOA you're simply provided advisories of observed traffic.


Yes, but not really. Check the separation standards for small VFR
aircraft in class bravo. It's practically non-existent. You get
half the IFR/IFR separation, but only if the other aircraft is
19,000 lbs. For smaller aircraft the standard is target resolution
which means you could practically reach out and touch one another. In ATC
lingo it's called "green-in-between".


Actually it's just "green between" in ATC lingo, but that's still
separation.