The Experience of What Arises

I just read within this question that the accomplished arhats, and perhaps the Buddha, still feel pain though they lack aversion to it. I had contemplated for a long time to generate insight and reasons, analytically, to tackle the arising of negative thoughts and attitudes. However, this process was seemingly effective in preventing the arising of negativity, but seems contrary to fully experiencing reality without attachment or aversion. 1) When a person just sits, aren't they, in a sense, with equanimity towards all that arises? Any orientation towards thoughts or experience changes with time, and it is time--in meditation--which determines the untangling of what arises. 2) Wouldn't equanimity towards *all* aspects of experience create a different result than either distraction or insight relative to what arises?