Summons in KH/KH2

[PuPu]

It might just be you PuPu, because every drive form seems to make every battle easier for me rather than difficult,

Because when most enemies hits you, it's probably not enough to do any real damage. You can probably ignore up 6 or 7 hits by most enemies before hearing the beeping HP bar.

But it isn't just me, Critical Mode players would agree with me. From what I hear, Valor and Master forms are suicide in Critical and the amount of "oh no I made a mistake and now I go from full HP to 1HP" times on low level Proud make me agree.

not that the game is even hard on Proud mode.

It is when you're on a low level, or Critical mode. Having Dancers that can take out 3/4 of your HP bar with their grab move, and having Hot Rods that can instantly reduce your HP to 1 with their "LOL I'M INVINCBLE" charge sucks.

Doesn't Master form give you infinite chains or something, even if it was risky to fight in that form,

The problem is fighting against enemies that can deflect your attacks, and with stagger resistance. i.e. all the tough enemies in the game. It doesn't matter how strong Master's attacks are if the enemies can just brush them off, counterattack, interrupt your combo, then proceed to take off chunks of your HP.

as I never found it to be.

I'm not talking about fighting Shadows and Dusks or any negligible enemies where Driving is hardly even necessary. I'm talking about the major enemies and bosses in this game with absurdly powerful "I'M INVINCIBLE" counter attacks, with stagger resistance. The enemies that say "smurf YOUR COMBO, I'M STILL GOING TO HIT YOU IN THE FACE AND KILL YOU"

Assault Riders, Hot Rods, Morning Stars, Crimson Jazzes, Devastators, Berserkers, Dancers, Dragoons, Demyx, Xaldin, Xigbar, etc.

Going into Valor or Master against any of these enemies is a disadvantage no matter what your playing style is.

Endless reflect spells should save you.

Which shouldn't even be necessary, since Normal Sora can do the job better with Guard + Counterguard and can also do Reflect Spam.

Hot Rod, which are hard to defeat no matter what form you're in),

No, it's pretty much only difficult to defeat in Valor. Even Master has Magic which should be enough to take it out. Though no Guard is still a huge disadvantage.

my attacks have never been deflected by any enemy.

I guess I haven't been specific enough. There's enemies that resist stagger when you try and hit them with your attacks (e.g. Morning Stars, Dragoons, Demyx, Saix) and will still interrupt your combo, and hit you in the face. Even the ones that DO stagger easily will eventually counterattack and STILL hit you in the face with some invincibility move after hitting them too many times. And trust me, Master and Valor have extremely long combos with many hits.

EDIT: Just tested it out on Demyx. As suspected, he breaks out Master's aerial combo before you even get a chance to do a finisher, then blasts you with water. This is the perfect example of why Master and Valor combos suck, because he's not the only enemy that can do this. Using Valor against him is just outright foolish with no magic. Valor's ground combo does about 5mm of health bar damage more than Normal Sora's ground combo, and Valor's air combo leaves you stuck in the air defenseless for him to water blast you.

Master and Valor suck.