A: Yes. AetherSX2 shares the same memory card format as PCSX2. Simply move the .ps2 file to the PCSX2 memcards folder.
You can find free, completed save files through community resources:
You don't need to spend 60 hours grinding Mission Mode to enjoy Ultraman Fighting Evolution 3 on AetherSX2. With a , you can jump directly into a Kaiju brawl between Ultraman Noa and Grand King within five minutes of reading this article.
You are looking for a or .max file. Since AetherSX2 uses the standard PS2 memory card format, look for "UFE3 100% Save Data" on community sites like: