What region are you play Aero Fighters 3 in? Are you aware that if youre playing in EURO region, the game is considerably harder due to the VERY fast moving bullets? Play on either USA or Japan regions and youll find it is pretty simular in difficulty to Aero Fighters 2
Perfect reason to have a UniBIOS installed right there. Here are some more reasons:
If you try Strikers 1945 PLUS in Japan region, the hitbox around your plane is larger, making it much harder when the screen fills up with bullets in the later levels.
If you play Prehistoric Isle 2 on Japan region, you get a 5 segment health bar instead of lives. ( i dont reckon that is any better though, both ways have advantages )
Playing Neo Driftout on USA region results in faster times, either the car goes faster or the clock counts slower.