So.. people are saying that db cannot even bust a star.. and is not FTL...
Before reading this, please do not say it's all hyperbole or "powerlevels are bullshit!" because cannon is cannon, end of story.
Here is roshi destroying the moon at mere 139 Battle power.
Here is picolo destroying a moon at 300+ BP and the blast reached the moon in mere seconds!
In mortein's post shows that the combat and travel speed of dragonball characters are FTL, also,
as shown above that picolo's blast reached the moon in mere seconds, in one episode of dragonball Z, vegeta evaded frieza's beam which was much much much faster (Probably even FTL+) that means they already have lightspeed++ reaction and lightspeed speed .
Now going by maths:
As vegeta stated in the saiyan saga that he could well destroy a planet easily with just 18,000 BP, he probably isn't lying since
Earth = 49.3x moon
Which means 18,000 / 139 = 129.496 which is well above 49.3
129.496 / 49.3 = 2.61 that means vegeta at 18,000 BP can destroy two and a half of earth he can also destroy 128.673 moons in one blast
So Goku SSJ1 at 150,000,000 BP can destroy 21889x Earth in one blast, while sun is 1,303,533.017x Earth he still can't destroy a sun at 150,000,000 BP.
Since broly has 1,400,000,000 BP at 1.4b BP he can destroy 204,299 earths (but goku SSJ3 maybe can 1 shot the sun since he has well beyond 6b BP and as stated here http://dragonball.wikia.com/wiki/Dragon_Ball_Timeline "Age 801
Goku goes missing. Both Goku and Vegeta knew their lives were near an end, and leave Earth for a final battle. Years later, supernovas are detected; they are assumed to be from Goku and Vegeta's battle..." they were strong enough to create supernovas)
So that means there is no way that he could have one shotted a galaxy because a galaxy is bigger than a sun. and yes the fact that omega shenron can destroy a universe is shit. ( maybe he can destroy/1-shot a galaxy though )
50,000,000,000 is the BP of Gogeta SSJ4 (atleast) as explained here: http://dragonball.wikia.com/wiki/User_blog:Black60dragon/Super_Saiyan_4_Gogeta_Power_Level
SSJ4 Gogeta would be enough to destroy 5.597x SUN.
But if we go by the theory of gogeta being userxuser then he may be even able to one shot a universe.
As stated here:
Snake way is 1,000,000 KM , goku traveled it in mere 2 days with about 9,000 BP Which would mean he traveled at 5.786 KM a second!
Since speed of light is 299792.458 KM per second he could already travel 0.7 Lightspeed in a day with a mere 9,000 BP!
Since BPs should mean practically everything ( as shown in the series, those who have higher BP is the faster than the lower BP. ) It's safe to calculate it like this
150,000,000 / 9,000 = 16666.666x more BP which means 16666.666 x 0.7 = 11666.666, he could already travel 11666.666x Lightspeed in a day that means he can travel 3.240x Lightspeed per second!
If that formula is correct, it's safe to assume that he is FTL after the fight with frieza."
Their durability is not bad either, people who are saying that thor's hammer will punch a whole through gogeta ssj4 is bull, if ssj1 goku cannot even affect perfect cell and gohan ssj2 is stronger that means gohan has a durability of atleast tanking a 28,000 earth busting attack.