You're right I don't want to overstate the case. 

We can't expect OCEAN to continue paying 29% more than the best FPPS pool in that list. Something way more reasonable between 5-10% seems probable.

The first blocks were OCEAN's "promotional period" where there was no ramp up effectively. This would have been amazing for early miners but! we only found 5 blocks during that time instead of 8 which almost cancelled out the entire thing (4 instead of 8 would have meant there literally was no promo period). What made a more significant difference was a large miner jumping on in late January causing "over payment" to Bob for a while as that's how TIDES works.

But there are also many factors that speak to the opposite side of the coin - over the entire period the pool ran at 94% luck, we missed out basically all of December and April which were the two highest fee environments in history. We found a disproportionate number of empty blocks (that was fun). Fee spikes were increasingly short lived and we never got managed to snag a block during one of them.

Many factors that - from our internal discussions - makes it reasonable to estimate FPPS is costing miners at the very least 5-10%. This is being probably a little too generous to FPPS but this is the hands on heart truth.