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2001 ford ranger 3.0 - O2 sensor toggles around during WOT, doesn't seem normal

was trying to diagnose WOT pinging issue, when I noticed the O2 sensor isn’t showing rich during WOT like my other cars. It wiggles around similar to when crusing closed loop. is this normal for this vehicle. Fuel pressure 60, fuel filter changed, about 1 year old egr DPFB, no check engine lights