Is there any game more misplayed than this one by the average player?

[Assani Fisher]

I've probably logged 50x more HE hands than PLO/8 hands. However if I sit at the highest limits at Party for HE($25/50) its a pretty tough game and my win rate is still questioned(I'm a winning player at $10/20, but havn't logged enough hands at $25/50 to say for sure yet). However if I sit at the highest level of PLO/8($10/20) I feel totally comfortable and very much expect to have a winnning session most of the time.

And the mistakes I see even at the highest levels available on a site are insane. Just really bad poker.

What is it about this game that causes it to be so misplayed? Is it simply that because HE is the most popular game that has caused the average player to be pretty capapble at that? Are other non-HE games(stud for example) similarly soft?