I'm not discussing running good or bad here (difference between blue and red line), but the relationship betweeen the green and the red that is interesting. (Winnings without showdown and EV when showdown)
Party 2/4 6 MAX

Weak tight ? Seems like I only go to showdown with very +EV holdings, and obviously is losing quite a bit of money when there is no showdown. It's easy to get the impression that I'm pushed around quite a bit and that the opposition is tough ?
Ongame 2/4 5-6 MAX

The complete opposite ? I often win without showdown (I think my CB's works a lot better at Ongame) and I tend to get more respect when I bet. When we DO get to showdown I'm often marginally worse than my opponent.
Can you imagine 2 sites at the same level being this different ? Other explanations ?