I'm going to hold off on voting for now as I haven't made a decision, but I'd like to lay out some facts for consideration here:
Number of Sets
* B64 : 10
* TSA : 16
Number of Unique Sets
* B64 :5
* TSA : 11
Sets Common to Both Games
* Knight
* Cat
* Ribbon/Slash Claws/Ribbon Dress/Basketball Shoes
* Top Knot/Fans/Kimono/High Heels (names changed for easier visuals)
* Gold
* Geta (just the shoes)
* Boxing Gloves (just the hands)
So, TSA actually includes more than half of B64's entire list, and has a greater amount of total items. Does quantity mean quality? No, but it's important to note which sets are common to both before deciding which game had a better offering. Basically, what we're comparing here are the five sets unique to B64 to the 11 sets that are unique to TSA. These are:
Bomberman 64
* Dragon
* Iron
* Sunglasses/Duck Head/Drill Arms/Duck Legs
* Chicken/Silver (horse)/Wing Arms/Animal Slippers
* Smile/Karate Man
Bomberman 64: The Second Attack!
* Kappa
* Rider
* Painter
* SF (Robot)
* Clown
* Mohawk/Leather Jacket/Kaiser Knuckles/Leather Boots
* Moustache/Tank Body/Bravo (Fans)/Bigfoot
* Headgear/Elephant/Kung Fu Shoes
* Rabbit/Duck
* Old Man Head/Family Restaurant (Apron)/Puppet Gloves/Pommy Slippers
* Merchant (Cowboy)
I do agree that TSA's multiplayer player graphics were pretty bad. I've no idea why they used lower quality models for the Battle Mode, or why they included a couple of body models that have major clipping problems with feet (the Tank Body clips horribly with Bigfoot, and there is not a single set of feet that don't clip through the Pink Dress. Seriously.), or why they included a bunch of selectable AI players instead of other Bombermen when they don't even allow you to play as the other characters. Weird decisions abound.