Match the software to the platform
MetaTrader 5 uses Expert Advisors and cTrader uses cBots. cTrader supports development in C# and Python. A move between platforms generally means adapting the strategy to different APIs and retesting order sizing, symbol names and entry timing. Ask what files and instructions you will receive.
Compare the same test conditions
MT5 can run its Strategy Tester using broker-provided real ticks where available. cTrader offers cBot backtesting on its desktop apps. When comparing reports, use the same date range and intended instruments, and record costs, data settings and execution assumptions. Check whether the observed differences come from strategy rules or the test setup.
Decide where the bot should run
cTrader supports local cBot execution and cloud instances, with compatibility and limits that can depend on the broker. Before relying on either platform, confirm how the process restarts, what it does when a price feed disconnects, and how you can pause it and inspect open orders.