Hi @livinguktaiwan, seems a long time since we chatted during the MAP community days. This post popped up on Ginabot, so came for a read.

I think you may be the first, apart from myself, to analyze the returns from what is now called MAP Rewarder. It is a managed fund, with a few strategies, depending on the Steem blockchain conditions, activity, prices etc.

The returns you show are about right for the weekly payouts to delegators, but they do not include all the bonuses, such as daily upvotes and random higher upvotes and free SBIs.

These make it slightly trickier to calculate an average but, for example, a 1250 SP delegation would receive an upvote equivalent to 0.0095 STEEM, so if posting daily that comes to an extra 0.066 STEEM approx per week (or 75% of that as author rewards).

The random upvotes are designed to change the reward curve so that low-value delegators may receive a higher percentage return whereas the high-value delegators still get higher absolute values.

Just as an example, a 30 SP delegator who receives a 30% upvote will have gained about 0.7 STEEM (actually 75% of this) which is significantly higher than the average weekly return of about 0.1 STEEM for that level of delegation.

Compare that to, say, a 3,000 SP delegator who receives the same 0.7 STEEM upvote but who will also get about 10 STEEM as the weekly payout. The percentage increase for the smaller delegator is thus highly significant.

Sorry if ended up a bit long - thanks for the analysis :-)