They didn't increase the buffalo strength at all and I can tell you that because I tanked it with my THM and it did the same damage to me as he ever did whenever I grabbed hate or ran too close to him.

I don't understand why they had to dumb down the old NMs, we were able to kill the Buffalo with just 4 people 2 times (We were ARC, PGL, MAR and me THM) in about 20-23 minutes before the patch, heck I even duoed him before but I had to reset rage once for that, but now that they reduced his HP I doubt I even need to reset rage anymore. I also duoed the Elder Mosshorn with my friend Sakura (PGL) post patch wich we were not able to do before because they were 7 goats total and we got our butts kicked badly the 2 times we tired to do so, but now that they removed 3 of them the fight was much easier.

If that's not easier to you then I'm afraid to hear what that would be, I really am.