Quite a few people who were at the Monero launch were reporting hitting 1-2 blocks per day. Over a two week period, they might have got 750-1,200 coins, lets be generous and say 5k.
Some people had managed to get really lucky and had
20k, about 10% of the supply at the time, in about a week.
.....
I already pledged 10k which is half of my coins...
Nice to have the luck to be in the right place at the right time and to have the resources to scale up such a mining effort.
But with Monero, the dev, or the patsy account, mysteriously vanished.
While the Darkcoin dev was open about his name, which part of America he lives and is still around - working away, for 14 months now, with plans to carry on developing - you know 'dev'ing.
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You see what I did there?
A few facts, and some leading words and you can take that sort of thing in a variety of directions depending on your intentions.