Gallade or Gardevior?

I have a level 33 100% male lucky, I might never evolve it (well, til hypothetical CD). Already have a 100% maxed female Gardevoir.

Both aren't good at their current state. Gardevoir is useful against Palkia currently but even then it's far behind the best counters.

I'd wait for Ralt's CD honestly. I love Gallade, but my boy isn't too good at the moment.

Tell me why it is not when its dps is on the level of primeape and exeggutor?

Both are entries, at the moment. Gardevoir's an ok-ish counter to palkia, and a good counter to machamp, but even then theres better counters for both.

Machamp is the superior fighting type, and for both psychic is an ok typing on offense, and there much cheaper and better options like espeon.

I'm waiting with my 96 lucky ralts for a CD

Not sure why nobody has mentioned this:
Confusion is currently as good as dragon breath in PvP. Gallade has access to leaf blade. That alone puts it on giratina levels of powerful in the Great/Ultra leagues. Granted that Close Combat isn't an amazing move, but it's not horrid and provides good coverage options.
It has few resistances, but it has similarly few weaknesses and that move combo will allow it to win pretty much any and every neutral game it gets thrown into.

Gallade isn't useful for much else, but it's about as much of a dex-entry of Giratina(A)