I did one buff hunt there just after COVID. I have no experience in Zim or RSA, so it's hard for me to compare. I hunted the Wuparo concession, which is between two national parks. Many years, the south half of the area is a floodplain with lightly forested "islands". When I was there, the floodplain was mostly dry, with tall grasses everywhere. The northern half of the concession was fairly dense mopane forest. Lots of elephant, reedbuck, waterbuck, LOADS of impala, red lechewe, zebra, giraffe, kudu (a few), the odd sable and roan (I didn't see any). Hippos in every bit of water. A few crocs around.
We went out looking every day for buffalo. We saw a few dugga boys, but most of the buffalo were in herds of 50-100+. We saw two or three groups like that. They move in and out of the concession semi-regularly. I shot a bull out of a very large herd at around 20-30 yards. It's tremendous fun sneaking around big herds.
It's really fun country. I think I might like to do it again for leopard and hippo maybe, but there's so many other things to try. Who knows.......