A quick comparison of AS stats tells as much as I want to know. Purely looking at the Prime versions:
Summoner 10"j, TMM 2, 4/4/2 OV0, A6 S4.
Kingfisher 8", TMM 1, 6/6/3 OV1, A9 S7
Two hits by the Kingfisher, vs. four by the Summoner. Outside a canyons & craters environment, stick to the Kingfisher.