I found it more surprising that Yajirobe is apparently stronger than Chiaotzu. Granted, Chiaotzu wasn't powered up and I can't find any other numbers for him. Not surprising when all he did was explode all over Nappa, so he didn't exactly do much fighting. Incredibly, Yajirobe is WAY stronger than Master Roshi, who's power level is apparently about 180, which is something I didn't really expect.