I don't believe for 2 seconds Eminem suffered that large a drop. Interscope purposely withheld his album second week so that he wouldn't upstage Gaga. Watch his 3rd week experience a mysterious rebound. I can accept Gaga has played out, they should too.
The second-highest new entry will probably be the new "Now 48" compilation, which could start with between 90,000 and 100,000. All 47 of the regular (numbered) "Now" albums have reached the top 10, and all but the first debuted in the top 10. The last "Now" set, "Now 47," debuted at No. 2 with 82,000 sold in August.