Level is a poor example of deciding overall power. A level 99-ground-for-hours-twinked-to-max-stats Cloud is going to be 255 down the board. My poetics-ground lv50 Warren Castille is currently
STR 541
DEX 191
VIT 550
INT 119
MND 202
PIE 168
meaning that, numerically, Warren is twice as strong and tough as any member of FF7 at their absolute maximum peak. His elemental resistances are all above 255 as well, meaning summons aren't going to work too great.
To answer the question with a question: Who would win in a fight, Batman or Spider-Man? There's no answer, just people reasoning one or the other.
STR 541
DEX 191
VIT 550
INT 119
MND 202
PIE 168
meaning that, numerically, Warren is twice as strong and tough as any member of FF7 at their absolute maximum peak. His elemental resistances are all above 255 as well, meaning summons aren't going to work too great.
To answer the question with a question: Who would win in a fight, Batman or Spider-Man? There's no answer, just people reasoning one or the other.