I have used both. My son has one as a backup frame too.
Wilson PS 95: more comfortable initially but I developed extraordinary, disabling pain in my hand when using it. It appears that as part of their AmpliFeel technology they inserted metal shanks in the handle. Since AmpliFeel is intended to deliver more feel of the impact it makes sense that your hand feels more shock. Some other have reported similar experiences. Other than the AmpliShock problem it was a great frame. Less solid compared to the Bio 200 Lite but easier to maneuver. If the pain had not occurred after long term use I would have stuck with the PS 95.
Dunlop Bio 200 Lite: as I noted in previous posts the "Lite" is really misleading. It's a solid player's racquet. Extremely precise and surprisingly spin-friendly in spite of its 95" size. I tail-weighted my for extra mass and to make them more HL and added some mass in the head for plow. For comfort I'd give the edge to the PS 95 when it comes to initial feel but over the long haul the Bio didn't hurt my hand like the PS 95 did. Eventually with the PS 95 I literally could NOT close my hand in the morning after playing with it the night before. Never had that problem with the Bio 200 Lite. In any case the Bio 200 plays a little stiffer than its specs suggest but still very comfortable. A couple of years ago I had an undefeated singles season with this frame and only moved on as I was curious about trying larger heads for even more spin potential. Two years later I'm back for the control (and I found some locally very cheap for myself and my son as his backup racquet).
Power: Bio > PS (but not by much...it's like comparing a wet blanket and slightly less wet blanket...both are low powered)
Plow: Bio > PS
Stability: PS > Bio
Spin: Bio > PS (significant difference here and I don't know why)
Maneuverability: PS > Bio
Control: Bio = PS (slight edge to Bio but not enough to be a decider)
Feel: PS > Bio
Comfort: Bio > PS (darn Ampli-Shock!)
Both are solid, control oriented frames and I really enjoyed both. In fact, I'm using the 200L again since I enjoy its precision and spin so much. Normally those two elements are mutually exclusive: either you get a big, open, spin-friendly head that's hard to control or you get a tiny, dense, control-friendly head that's harder to generate spin with. The 200L provides both ample spin and control.
You really need to demo these head-to-head and strung the same way since they're so close together.