Originally Posted by Exxez
honestly, if you look at the statistics his win rate is going up
It was; not anymore. Before this buff, he had a 40% winrate. Now it's at 43%, which is still extremely low.
If we want to compare, Diana was also nerfed to a 40% winrate at the same time as Rengar, was buffed at the same time as Rengar, and is already up to about 50% winrate.
It might take people a little bit of time to figure out how to use Rengar effectively now, so his winrate might still go up a little bit more, but if it doesn't I'd like to see a bit more of a buff. I want a bit more sustain in-lane (either more base hp/5, or add in some AD scaling to his heal like was mentioned a bit ago) and also take away the delay from damage for his ult.