They said that about last year's draft, too. As near as I can tell, they were lying. This will be the second year in a row where it's allegedly going to be "the deepest draft since..."
The lottery is very good. There's no can't-miss number 1 guy, but there are very good talents from 1 to about 14 if all the projected players do enter the draft, which is better than most years. The strength of this draft, I think, is in the 5-10 range which looks a lot better than it usually does. 15 and below is about the same as every year. A few gems and a lot of guys who won't have much of an NBA career.
As for last year, it was never that deep. It was top heavy. There were only about 6 guys that I saw with star potential and most of them were young/raw. Both Wiggins and Parker were as good as advertised. Embiid might be. Randle barely played. Saric is doing well in Europe. The jury is still out on the rest. It's the "wait and see" draft. Other than perhaps Parker, I don't think a single one of them came in NBA ready.