In most casinos slot players get better comps than those playing table games. [The computer chip in the slots is programmed to give them a known edge.]
You need 1000 comp dollars (in a year period) to become Black Label at The Borgata. With your level of table play, you would make BL reasonably fast on slots.
Did your husband reach Titanium level at The Borgata (a level that exists, but is not spelled out in Borgata's literature)?