3 maps
moo: #270 on the SimpleKZ ranking, 111 points. ekahs: #273 on the SimpleKZ ranking, 108 points.
moo and ekahs share no map in any mode.
In short
One side only
moo 1, ekahs 2
Hardest moo is missing: kz_mz, a T1.
Tale of the tape
Maps by tier
Neither has taken a SimpleKZ record from the other.