OBJECTION!!!

Squall can use GF to absorb the damage, then capitalize by attacking while Tidus's overdrive meter is at 0.
gf's HP can only go up to 9999 also...so fine. it'll take tidus two hits to kill him. if tidus's overdrive meter is at 0 and squall attacks...tidus will take it. he'll take all the 500 damage or whatever squall throws at him and attack squall with his 9999 damage.