No, the Big Y test is a more comprehensive report. It shows your downstream clades to more recent times. 23&me's assignments are too far back in time. My Y-line is rare/undertested and it goes back to the bronze age. And with more people taking the test, it will update in the future. I took the Big Y to maybe get an idea of where it came from more specifically. Did it come from the Romans(from Italy), Near Eastern auxiliaries, Phoenicians, Greeks etc?
There was one person on another forum that was J2 also discovered through the Big Y test his most recent paternal ancestor came from northern Italy in the late Medieval period. I'm keeping it vague because this came through a private message exchange.

