Yup. If we get pure SSJ transformation we would be overpowered. They added this poor imitation of super saiyan becouse
"WHAT? THIS IS DRAGON BALL MMORPG AND I CAN'T EVEN BE ICONIC SUPER SAIYAN? that's why we are tired after ssj end and got small boosts to stats, and we never get ssj2.
what was Akira Toriyama thinking when made the story of this game ? lol