Tough to say honestly, but I think Tambourine being surprised Cymbal got killed while he tested Kuririn's strength ought to mean he didn't expect that level of power to kill Cymbal. So I'd go with Cymbal. Cymbal was fodder to Yajirobe once Yajirobe got serious as he dodged the energy attacks very easily and Yajirobe is supposedly stronger than Tambourine, who himself is way stronger than Cymbal... So yeah, I don't think the Yajirobe Vs Cymbal fight means much beyond Cymbal taking Yajirobe off guard as Yajirobe wasn't accustomed to that level of power and the energy attack threw Yajirobe off a little.
I don't take many times stronger literally in DB, to me sounds more a way to say their levels are far distanced rather than something literal, just as I don't take Karin saying Goku got many times stronger from his training literally, more like Goku just got way stronger in a way he couldn't be comparable to before. Still tho, Tambourine showing some signs of surprise at Cymbal getting killed tempts me to think Kuririn couldn't achieve that. However, I think they are more or less under the same vicinity.
Kuririn -- 40
Cymbal -- 45
Tambourine -- 60
Roshi -- 60
Goku (full match level) -- 65
Tenshinhan -- 72
Goku (FP) -- 75
Yajirobe -- 68
However, statements like King Piccolo saying he didn't even use half of his power Vs Goku I take seriously, as that is harder to be taken as a hyperbole, more like a direct statement on the level Piccolo used Vs Goku, much like future 17 didn't even use half his powers Vs Future Gohan. That seems more like a straightforward statement, meant to set more of a line towards the scaling.