Random Results and Unknown Timing
Deciding how much to stake on Mustang Gold will not tell you when the bonus round arrives. Nobody can know that in advance, and each spin is random. The result of one session can sit far above or far below the RTP figure, because every spin is random. Treat the RTP as a long-run average, not a forecast for your next visit.
Checking the RTP version before the first spin shows what the game pays over the long run. The version in use is shown only in the game rules, so read them before you stake money on Mustang Gold. The RTP table converts each version into money for A$100 staked, which makes the versions easy to compare.
Judging the maximum win before you bet shows the ceiling, not what to expect. Mustang Gold caps a win at x12,000 of the bet, and that ceiling is reached very rarely. Read the top figure as a limit set by the game, not as a target for any single spin or session.