Gap between F Goku and Tournament Goku

[TheUltimateNinja]

It's really been bugging me that Goku doesn't seem that much stronger from his training in the time chamber even though by all accounts he should have multiplied his power several-fold, we know training with a partner is highly effective, the effects would be further boosted by the RoSAT, so it makes no sense that Goku's power level did not rise all that much. Is there any indication that he actually became a great deal stronger?

[Rubens]

The time they spent there was pointless as a whole and not just because of the unknown results in terms of power increase: with the time they spent there, Vegeta should know about Gokus ability to combine the kaio-ken with ssjblue, in the manga is said that switching blue on and off consecutively looses and vegeta should have acknowledged that, then there was a part where Vegeta mentioned they were reaching their strength limits and couldn't improve much, but it contradicts with his improvement before fighting Black the last time (he spent a 6 months in the RoSaT while Goku learned the mafuba, the first event being of little use and the latter totally pointless), so... yes, pointless.