Gr8 analysis. I can see why my post interested you as well, we're kinda looking at the same issue from different angles.
It is interesting to note that pancakeswap is above uniswap in two of the three charted metrics. It shows just how much the BSC defi ecosystem has grown over the last 6 months.
This might be mainly because of the low fees on BSC, where more can afford them, while the high fees on ETH are just for large users.
What you said about the active users makes sense too, and this could be one of the metrics that evens out to equal, or even uniswap take over later in the summer. Only time will tell.
Interesting times ahead :)
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