You might not know that even with the same pair, if you are trading on different platform the chart will be slightly different because the liquidity and orderbook is not the same. If in exchange A the local top is 0.11 for example maybe in exchange B with lesser liquidity the local top could be only hitting 0.1090 etc. If you want the same result you should use the same platform.
Sometimes, there's flash squeeze in a market with lower liquidity because there might be an ongoing manipulation.
In a nutshell, the outcome is different because the market is different. You can't count on the same strategy if the environment is different and expect the same result. This kind of thing happened too often when I'm trading new coins. Even binance alpha and binance spot price could be different, y'know.
Yeah, this might be the reason, too. The trading volume might be different if the gap is extremely high or low; then, for sure, there are really different results, especially when an exchange has extremely low liquidity pairs.
Might be good, OP will share more details, for example, trades or pairs, much better if he provides these exchanges used.