All your weight is forcing the bike down if you sit up on top, you're acting like a big damper. Totally different if you're off the inside of the bike. Keep trying to maintain pressure on the inside bar - you have to push way harder than you'd expect to really generate movement.
i like the counter lean for low speed stuff, as most would.
At higher speeds, I suspect I'm not going fast enough to need to decrease lean angle.
none of this matters one bit.
Just a curiosity.
carry on.