"Objectively"? Lol. We'll agree to disagree, although my opinion includes the 350R. Not talking about collector value. Talking about road racing ability.
Not nearly as fast? Curious what your 911 would do for a lap time at Willow Springs. Have not driven my 350 there, but think it would break 1:30 based upon my laps there in my BMW at 1:32.
I lived about an hour from the track in the mid-60s. My Dad drove my Mom's VW bug around the Ring with me , my Mom and sister in the car. lol. My Dad and I attended the 1,ooo kilometer race there in 1966. Fords and Ferraris.