With Scorpion, 40% reliably from a jump in without X-ray, think it was 9 hits.
With Liu Kang, 42% reliably with X-ray (10-14 hits). Without, it's 24% reliably.
With Kung Lao, 61% highest ever (13 hits), but 45% reliably with X-ray, 28 reliably without X-ray.
With Kitana, 29% reliably without X-ray, 41% reliably with X-ray. haven't played around with her too much.
With Ermac, from a jump kick: 29% reliably without meter, 45% reliably with X-ray. From a jump punch, 40% reliably without meter, 56% reliably with X-ray. Guy has the easiest bread and butter combos ever, comboing with his teleport is even easier than Scorpion.