Wow lots of claims itt about "our edge", "doubling up more than doubles our edge[citation needed]" etc and no sums to back up those estimated edges!
The bottom line is that ROI is the truest indicator as to our edge, a confident sample size is likely not achievable for live play and impossible for our ROI specifically in instances when we double up first hand.
If you know you suck at poker - call.
But given most of us will believe, rightly or wrongly, that we have an edge on the field. Then it"s a fold.
^^ This about sums up the dilemma.
What we can confidently consider are the factors or skills that give us an edge.
If the assumption is that we make better decisions than our opponent and since we are in a decision making contest with them, the more "rounds" we play in this decision contest the more our edge accumulates. Conversely, reducing the contest to one round reduces that edge.