So judging by this....If we go by Gardevoir at Level 41, with no IV/EV and a Neutral nature...
Gardevoir stats at Level 41
HP - 106
Attack - 63
Defense - 52
Sp.Attack - 107
Sp.Defense - 99
Speed - 70
Delphox at Level 41 (according to the photo with unknown EV/IV and +ATK/-Sp.DEF nature) is
HP - (unknown)
Attack - 72 (+9 over Gardevoir, but with Nature boost)
Defense 79 (+17 over Gardevoir)
Sp.Attack - 107 (+/-0, so who knows)
Sp.Defense - 106 (+7 over Gardevoir, but with Nature drop)
Speed - 108 (+38 over Gardevoir)