DragonBall Super (Manga) characters status-quo compared to DragonBall Z?

[Let's Go Fearless!]

Trunks was probably suspecting that Black still had something up his sleeve, which turned out to be the case with Future Zamasu, his Zenkai and his SSJR. However, it doesn't necessarily mean that Black was holding back, especially with everything Pyro pointed out.

That does make sense, it seems that Trunks face gave us a hint that the fight isn't over yet.

Well, it would have been underwhelming if a DB arc ended so easily, right ?

Yeah, it would be a subpar with Super 17 arc.