Notaka said:
A databook has 1 kili = 50,000 BP. Yakon has 800 kili so he should have around 40 millions.
Databooks are a case by case source, as many (like this one) blatantly contradict the original manga or themselves. For instance, the manga makes it clear 23rd TB Ten > Piccolo Daimao, whereas the Daizenshuu paints a different picture.
If we're using guidebook statements you also have the Daizenshuu explicitly stating that Shin is scared of Yakon, as well as Base Trunks being able to fight evenly with #18 at the 25th TB, both things that can be easily inferred from the manga as opposed to something such as a guidebook statement in a vacuum.
On the opposite end of guidebook statements, we also have Budokai 3 promotional material stating 5th form Coola is at 470mil and SSJ Gogeta is at 2.5bil, which regardless of how minimalist your battle power list is, just can't work logistically. Some guidebook statements need to be taken with a grain of salt if they blatantly go against what the series presents.
Also, he managed to somewhat keep up with Base Goku who, at this point, have him superior to 50% Frieza in my list.
Evidence should always come before battle power lists, and the evidence from the manga has quite a clear point on Base Goku at bare minimum being above #18 and which placing him as low as 50% Freeza doesn't really have much backing it up. Not only was Trunks able to fight her evenly in a restricted costume, but Vegeta's opinion on his chances didn't change after the "No SSJ rule" was implemented despite #18 being on the plane.
Also, before the classic "#18 was suppressed" excuse:
- Character-wise, she has no reason to when she's in it to win.
- If assuming she was holding back due to thinking Mighty Mask was a normal human, she's immediately proven wrong and the idea her full power is far above his league would bring up the obvious question of why did she not simply put forth enough power to KO them?
- Trunks makes it apparent how restrictive the costume is so no matter how you cut it, he was unable to fight to the best of his ability.
Also, before the "Base Goku < Freeza according to Super" argument, refer here for some counter-arguments: http://www.dbzeta.net/viewtopic.php?f=8&t=15933