I would love to actually get a feel at what I m doing and be able to input pokemons on the 2 sides of the fight. Like trying delta galame vs delta scizor and so on? That way I can feel the difference between different deltas without having the biased perception of my game or doing calcs which doesn’t give me the feel much. So is it possible? (Please, Pretty Please)
The hell is a delta galame? Also you can totally do this on the Battle Sim 
You can use either Somgon damage calculator ( http://pokemonshowdown.com/damagecalc/ ) to input data you want or the battle simulator like Fel suggested.
I think that might be a typo and she meant to type Gallade.