Not anymore- a large proportion are from chapters who have fallen since then.

Even in 2nd ed, there were the Red Corsairs, but in 4th, we got a whole lot more.

That said- in theory a Chaos Marine from one of the Traitor Legions should be more powerful than one from the modern Traitor Chapters/Companies/Squads etc.

In practice, on the tabletop, they don't do that.