Most often than not a better optimized build played by a better pilot.
You guys need to learn the new better way of hardmodding. There’s no need to download / provide the whole 30MB GDX2.arz (but just a few KB of what you changed) or to modify game’s files that are overwritten by Steam’s updates anyway. Can also choose whether to play a game normally or hardmodded depending on whether you launch from a shortcut or not. Also usually no need to update it after game’s version change.