Question for MAMEwah users with full set of 0.77 MAME roms

[arcadecab]

I am using MAMEwah and have a complete set of 0.77 roms--as per romcenter check.  On mameworld.net, it says that there are 4,640 total roms available as of 0.77 mame.  In MAMEwah, when I refreshed the gamelist after adding the roms, I get a total of 4,633 roms in the gamelist.  I checked with Minwah and he states that MAMEwah will not recognize the bios files with are included in mameworld.net's 4.640.  I am just wondering if 4,633 is the same number others have in there gamelists who have complete sets of 0.77 and have no filters.  I just want to further verify that I have all the roms and make sure that all the available ones are appearing in MAMEwah.
Thanks.