To find out now how much exactly ssj boosted stats by X% is more likely impossible. Big Bug Thread or not it simply will get ignored for certain amount of time. Just boost stats for like 10-15% and that's it. And it's way better to focus on one thing than thousand different ones.Besides Daneos said it himself that he will customize Transformations. That means he gonna change stats and stuff.
Most importantly, though, the run speed increases by about 50%, and attack speed roughly doubles. The speed is the reason why SSJ is useful, the attack and dodge bonus's are just a nice extra."
Runspeed increases by 50%?! Attack speed DOUBLES?! Have you TRIED seeing what happens when you get 50% movement speed? Or when you stack Thunder and two 25% attack speed weapons to get 100% auto-attack speed?
Before this update, hitrate increased by 15%, dodge by 30%, attack by 15%, movement&attack speed by 25%. I've calculated this myself. I'm pretty sure this is also what it was in the most recent retail DBO version as well. It's a neat lil' boost, until you realise Kaioken is more powerful and versatile, and the other races have way more impacting transformations.
But there's simply no way Daneos missed a 1% stat boost on both SSJ and Kaioken, on an update that's ENTIRELY devoted to "fixing" Kaioken&SSJ. Everyone's been asking for SSJ to give a slightly more significant boost like the SSJ pot does. He probably got sick of it (and comparisons to Kaioken) and pranked us.