Counted 23 for Spielberg and 30 for Hitchcock.

Almost all of Kubrick's films are in the top 5000 except for one or two.

Hmm, I explicitly checked Kubrick; http://5000best.com/movies/Stanley_Kubrick shows just 12. But you're right Hitchcock is the one to beat with 33.

http://5000best.com/movies/Frank_Welker/ - 61 results http://5000best.com/movies/Samuel_L._Jackson/ - 53 results http://5000best.com/movies/Robert_De_Niro/ - 48 results http://5000best.com/movies/Bruce_Willis/ - 44 results

These include some (in Frank Welker's case quite a few) TV shows, but even filtering for film all of them have more than Hitchcock.

Well, he made only 11 real movies (Killer's Kiss doesn't count IMO), and all of them are listed. So, I think the parent was implying that he's probably the only director with 100% "hit ratio".

Yes, Kubrick only directed 13 movies in his life and 12 of them made it on the top 5000 list.