Talk:V1.0.0.153/@comment-75.84.64.137-20130105095002/@comment-4708818-20130107182501

They prefer nerfing over buffing, because if they overnerf this champion will just not be played for a few weeks - which is no problem, since there are 107 other champions you could play. If you overbuff him, everyone wil lwant to play that specific champion, leading to quitting queues out of rage, a decrease of general diversity, etc. pp.

Additionally, if you would buff an specific class - e.g. Bruiser, it would force another class - in this example  ADCs - out of the gameplay, since they would just give more for less. That's why the GP10 got buffed, to enable more champions being viable as support.

Only if a champion is TRUELY TRUELY weak in comparison to others, it will be buffed. Even then it is preferred to nerf all the other champions in this specific class.