Well, after last night I can confirm the 1B/h for AXCZs. But only bc I met 3 players that each had a Gibconda and were happy to invite and share missions with me. And they all knew what they were doing. In the end I had about 500m in bonds and again as much in cash for missions. Nice!
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As for RES massacres, I dunno. I have scouted out a pretty good pair of systems that has it all, many factions giving missions all for one target system, but you still have to be lucky.
For one, every so often 2 or more source factions are at war --> no bounty missions.
Further up Aleks describes how she never has more than 30 seconds between mission target kills. That's amazing, considering how my buddies and me often cruise through the RES for 5 minutes without even finding a mission target. We do kill off the Wanteds too to make space, but sometimes you just don't get good spawns.
Yesterday for instance we ended up with a RES that was full of Friendlies, bc kills were randomly replaced with Clean spawns.
I suppose we should have left and restarted the instance, but that also costs time.
Many other money-making activities also whitewash the payouts by only counting the time of the core activity, not the overhead needed to get there. I.e. travel times,
raising reputation with mission-givers, mission board flipping etc. Especially annoying for Robigo as it's so far out in the middle of nowhere.
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Ultimately, comparing how many 100s of millions you can make with a maxed-out CMDR who already has it all is rather pointless. What do you want to do, buy another fleet carrier every week?
Much more interesting to look at possibilities open to new CMDRs, be it new players or Alts. Unless they are shamelessly powerleveled/twinked by vets, they have both more need for credits and way fewer options to make them (in those absurd scales anyway).