It gives the card a higher ceiling on its own, but it also makes it slightly harder to recur the effect with clones et al which is probably for the best
(It deals combat damage before creatures without first strike.) During your turn, creatures you control with +1/+1 counters on them have first strike
They also look into the printing quality of the image along with other details like centering, surface scratches, etc., which may affect its overall condition rating
Admittedly, there is a catch to the +1/+1 counter generation, as it only works on artifact creatures
Dungeon Dice Monsters is one of my all-time favourite GBA games, which could go some way as to explaining why its sitting at Number 2 in our best Yu-Gi-Oh GBA games list
Others have to use tricks like casting Deep Analysis to force you to draw cards and would otherwise have no game at all