At both of their primes/peak, Eddie was better as a comedian hands down. Eddie also has more classics than Jamie when it comes to stand ups and movies. Though Jamie has a greater range of acting chops and singing than Eddie and far less flops as far as movies go. Jamie's also has yet to fall off (or if so, not too far) after being in the game 20+ years whereas Eddie fell way the fukk off before he even hit 20 years. Jamie of today is definitely better than Eddie of today for sure.
Basically, Eddie's flame burned brightest, but Jamie's burned much longer and across more fields to a greater depth.