This cape is actually better overall. Who cares if the Renaldok Cape has 20 more mana, it doesnt make a big difference. In the upper levels, mana isnt everything. This wirespun cape has a less resists, but has 60hp. The 60hp in general make this cape an overall better choice.
Renaldok Cape
+9 AC
+8 Agi
+8 Int
+12 vsPos
+12 vsDis
+80 Mana
+1.00 Wt
As a 56th Wizard, I wont pass up 60hp for 20mana, especially on an item that has Int, Mana, and HP
But that is just me