Not, wow, you're up there with Gohan at his best, or something like the manga did.
Well that's just specifics. People didn't seem to have any issue with Enraged SSJ2 Vegeta being stronger than Ultimate Gohan even though Roshi only said he was stronger Goku did they?
So, I'm going to need some hard evident to be convince that Trunks is past Super Saiyan 3 Gotenks.
Well there is none, I could be completely wrong entirely. Once again I'm just taking things as they were presented. They said SSJ Goku wasn't weaker than SSJG Goku. SSJ2 Goku would be stronger and Trunks was able to force him to defend himself and push him back. They never said he held back but they did with Trunks.
Trunks was able to put pressure on SSJ3 Goku's arm when he was blocking his sword but as a SSJ he took what Frost said was a full power punch and he just grabs his arm and it doesn't budge at all.
Whis says that Black is impressive in the present but Trunks fought him in the future where he was supposed to be stronger and he was able to hold his own briefly against someone who can probably hold his own against SSJB Vegeta going by the preview.
He can react to SSJB Vegeta's speed, he dodged his punch, he was kicked through a forest and punched around and stayed conscious but Cabba dropped before he knew what happened. Afterwards Trunks was impressed enough with Vegeta's power that he was sure they'd beat Black.
The manga is different but they both present the same idea that Trunks has powered up enough to be on a similiar level to Goku's Super Saiyan forms.
Vegeta isn't going to let someone push him around, even the merged form of his son, while Goku will let people wail on him before attacking.
Well Gotenks couldn't push him around. He was hitting and blasting away at him but it wasn't affecting him at all. He didn't do the same thing with Magetta or Cabba because they could affect him.
Doesn't make sense for SSJ2 Goku who was said to be tens of times stronger than his base form to be pushed back and guard himself from someone if they're weaker than Gotenks.
We have no statements of the such for Trunks.
We don't have any statements that Goku was holding back or dicking about against Trunks. No statement that SSJB Vegeta was holding back either.
To say he can't be at that level because it wasn't said but then assume they were holding back even though that wasn't said doesn't seem right.