FrothByte... You must know ABSOLUTELY nothing about Venom.
First of all, Venom isnt an alien spider, hes a black symbiote, he just copied spiderman's powers when he took over peter parker for a brief few days.
First of all, Puma has one power, and only one, He has the ability to tap into universal energies from other dimensions, even worlds, I have lots of his comics, I have over 300 comics in my basement, Anyways, He beat Beyonder easily using his energy tapper, But it is unknown if he will ever be able to do that again.
Puma has no special Endurance or toughness abilities, all he can really do is biting, clawing, and he knows some basic street fighting, he was never very good, he ranked in with catwoman and black panther.
Venom, on the other hand, has a whole verage of super powers at his disposal, Unlike puma, he can lift virtually 11 metric tons!
Venom can lift 11 tons, He has a super webbing ability, it can hold almost 210 pounds per square inch! He can morph parts of his body into weapons, and he knows expert street fighting, expert martial arts, and he is a expert at fury attacks. He can send tendrils off his body to supphocate or shield other people, he can also regenrate at super fast speeds. So, To sum it up, He can lift 11 tons, has super webbing, is very agile, hs super toughness, has super regeneration, he can climb walls, he can change his costume to blend in with the environment, he can morph parts of his body into weapons, AND to top it all off, Venom has a super spider-sense, better than spider-man himself, as he can shut spider-mans off!
Puma was never intended to be that great of a character, his series is discontinued, and will never be turned back on. All in all...
Venom wins.
Want proof? Ill play out a battle scene, if ya want.