I don't know anything about this casino, but looking at the games that were played, i.e. roulette, baccarat, if this casino has a similar 'weighting' structure to others, it's quite possible that those games count for a lesser percentage than the usual slots 100%. Therefore, if $20 x 80
WR = $1600 playthrough, but if roulette counts 50%, baccarat 10%, that would explain the conflicting WRs stated, as each game contributes a different %, therefore each time the game is changed, so does the
WR.
I could be on the wrong tracks here, but that seems plausible