Why position is the MOST important factor at PLO?

[got0uts]

I am fairly new to PLO. My play was simple, play quality starting hand (6-combo, etc), fold on the flop if missed, continue if I have a made hand, massive redraws and the pot odd is right, and finally fold if I have a made hand but no redraws and there were many actions. That's it.

I am winning at PLO actually, perhaps it's because I was against bad players. But what I failed to understand was why position is so important at PLO (I played $200 or below)? I visited many sites like betthepot or playwinningpoker.com. They all stressed that position is the most important factor to consider at PLO but they don't seem to explain well.

Can some experts here explain why it's the case and perhaps with some examples? Links for the previous discussions will be great too.

Thanks.