Luffy definitely got more power ups but I’d break up as each got at least one gimmick, one equipment, and one AP boost
Luffy got:
No Touch CoA and Future Sight (Gimmicks)
DF awakening (equipment)
Internal Destruction and COC Coating (AP Boost)
Zoro got:
Fire and explosion cutting Gimmick
Enma (equipment)
King of Hell (AP Boost)
Sanji got:
Invisibility Gimmick
Exoskeleton (equipment)
Ifrit Jambe (AP Boost)
Luffy got:
No Touch CoA and Future Sight (Gimmicks)
DF awakening (equipment)
Internal Destruction and COC Coating (AP Boost)
Zoro got:
Fire and explosion cutting Gimmick
Enma (equipment)
King of Hell (AP Boost)
Sanji got:
Invisibility Gimmick
Exoskeleton (equipment)
Ifrit Jambe (AP Boost)