Goku tells Trunks that he was even stronger than Gohan was back during the Cell Games. Vegeta says to Cell during their fight that Trunks is almost as powerful as he (Vegeta) is.

However, there is more than pride at work here. Another point is that Vegeta did in fact hurt Perfect Cell. Finally Goku spent a little less than 1 day in time chamber while vegeta and trunks both spent 2 days and yet during the cell games Goku was way beyond both of them This was able to trash semi-perfect cell to a pulp.

When his wish came true Vegeta proved to be no match for Cell and lost.

I often hear or read people say something around the lines of "trunks was stronger than vegeta in the cell saga" You know, the whole scene where Trunks waits for vegeta to get knocked out before Trunks transforms that way he doesn't crush his dad's pride with his own power. The first we see on namek, Goku transforms upon Krillin's death.

It strains credibility that Goku would have gained more power than Vegeta from this endeavour.

... Goku and Gohan then proceed to find Future Trunks and Vegeta in the mountains. In other words, I think Vegeta is stronger than Trunks in base and therefore is stronger when they're in equivalent forms, but it's not a large gap by any means. Yes. ... but he is not fazed by it. We know that SSJ Gohan was vastly stronger than SSJ Vegeta and Goku during the Cell Games, and they definitely creeped on that gap during the 7 years, but SSJ2 Kid Gohan seems pretty uber if he could match SPC at 50% power -- whereas Dabura (roughly equal to SPC) seems to have given trouble to SSJ2 Trunks at the time as well as a weaker SSJ2 Gohan. Trunks for sure. Vegeta vs Goku(After completing his training in the Hyperbolic Time Chamber) = Goku. It also features the ascension of the four Saiyans (Goku, Vegeta, Gohan and Future Trunks) while they try to come up with ways to defeat the growing android threat. Trunks and Vegeta spent most of their time working on their Ultra SSJ form, which had the weakness that we later learn about.

He was a transformation level over him (SSJ2 vs SSJ1) Future Trunks in Dragon Ball Super was more or less in the same level than Cell Saga Gohan (SSJ2 vs SSJ2) but later he got a new transformation (Super Saiyan Rage) which is equal or over than Super Saiyan Blue, which is 3 transformations ahead than SSJ2 (SSJ3, SSG, and SSB) .

The Cell Saga arguably marks Vegeta’s lowest moment in the series, ... Baby increases his power by absorbing the energy of Gohan, Goten, Trunks, and succeeds in taking over Vegeta’s body.

Yes, and by a wide margin. As for the other question, no.

Goten was strong enough to act as Gohan’s sparring partner preceding the 25th Tenka’ichi Budokai, and at one point Gohan even worries over the possibility that he and Trunks will surpass him if he isn’t careful. The Imperfect Cell Saga is the eighth saga in the Dragon Ball Z series. While Vegeta was "toying" with Cell's 2nd form, I noticed that Trunks was "trying" to contain Cell from absorbing Android 18. There are several grades of the first super saiyan transformation, four to be exact. Perfect Cell Saga is the ninth saga of the Dragon Ball Z series. He makes no such comment in the anime. The manga volume that it is made up of is "The Room Of Spirit And Time".The saga is about Semi-Perfect Cell continuing his quest to reach his Perfect Form.

While Future Yajirobe is still a coward who shies away from a fight, living in a war-torn world has definitely done him a favor.

Where Trunks is probably physically stronger in it than Goku, like Cell says, he'd never be able to hit anyone to find out. I think this is the case until Trunks transforms into a SS Grade 3.

The fact that Cell chooses to kill Trunks before Vegeta could indicate he felt he was the greater threat, but Vegeta, at the very least, felt he was the stronger of the two. Also vegeta wasn't stronger than goku in future trunks timeline. Baby is very similar to Android 21, just with a weaker base form. In the TV special The History of Trunks, fans were led to believe that Yajirobe had been killed by Androids 17 and 18 in Future Trunks' timeline, but in Dragon Ball Super, it was revealed that he actually survived after Korin gave him his last Senzu Bean. Both vegeta and trunks also fought semi perfect cell and perfect cell which should have made them stronger. Chapter: 356 (DBZ 162), P3.1 Vegeta and Trunks trained in the hyperbolic time chamber and when they both came out, Vegeta was way stronger than SemiPerfect Cell . Cell Saga Gohan is stronger than Future Trunks during the Cell games. During their match in the manga Goku sneakily uses the Super Saiyan God form to defeat him in one blow. Nevertheless, we are doing it anyway! Once again, Vegeta loses focus and his pride becomes a weakness when he sees just how strong Cell has become by absorbing the last android. Imperfect Cell then breaks Piccolo's neck with a strong punch and launches an energy wave … Sure Trunks was stronger than Cell but he didn't dominate while trying to stop him. Let's look at the facts Vegeta came out of HTC(hyperbolic time chamber) as a super saiyan with increased strength and almost beyond average speed.