I am not sure that is a good starting point. He getting beaten with physicality not speed. Also, it isn't like he hasn't produced against teams that play up tempo. Here is how he has done against teams in the top 50 of possessions per game:
Houston (#10 in possessions per game): 15pt on 6-8 shooting, 9 rebounds, 1 assist in 22 minutes
Missouri (#12 in possessions per game): 0pts on 0-3 shooting, 7 rebounds, 0 assists in 14 minutes
Centenary (#40 in possessions per game): 16pt on 7-11 shooting, 15 rebounds, 1 assist in 29 minutes
Gonzaga (#49 in possessions per game): 8pt on 4-4 shooting, 5 rebounds, 1 assist in just 13 minutes
UTEP (#50 in possessions per game): 13pts on 4-9 shooting, 8 rebounds, 1 assist in 26 minutes
One of these stat lines does not look like the others. I think that indicates that pace is probably not a "good starting point."