BBS Enemy Health Glitch?

Hey everybody. I'm posting because I have what I think may be a glitch with enemy health in BBS. For context, I beat Terra's story (on normal difficulty) a while back and wanted to come back and beat the rest of the game. The problem is, my PSP is on its last legs, so I decided to play through on easy so I could breaze through quickly just to get the story.

So, everything was extremely easy, until I got to Deep Space. Suddenly, enemies had a lot more health. Now, I've played KH I, II, and CoM plus Terra's story all on normal, and I know at a point the enemies health always increases to balance the game a bit, but I'm not talking about that. The enemies suddenly easily has 20-30 times more health than before - each of my attacks takes about a pixel-width off of an enemies health bar. Beating the weakest of unversed takes about a solid minute of whacking.

The game is still not too difficult - it appears that enemies have the damage and attack patterns from easy mode, but it takes FOREVER to fight anything. Captain Hook took me like 20 minutes of straight fighting to kill. This doesn't seem right to me, so I was wondering if anybody had any expertise in this area they could tell me. Thanks in advance for the help.