>>18487471The problem with delphox is not so much is shitty move pool (you can work around that) but its ability.
greninja can function as a late game special/physical/mixed sweeper, or a fast support and harrasment pokemon.
Chesnaught can be used as a hyper offensive tank to punch holes in key enemies, or a staller with leech seed.
The only useful sets I found for delphox are the revenge killing scarf set and the sub calm salac set with magician. A lot can go wrong with these while the other two have safer more reliable uses.