In the Character Creation chapter, Table 3-2 uses a generic, unnamed house, slotting the lord, heir, lady and offspring at Status 6, bannermen and septons at 5, maesters and landed knights at 4, etc...
In the Abilities and Specialties chapter, under Status, the ranks go from 0 for a slave, to 4 for a landed knight or heir to a minor house, to 5 for a lord of a minor house, to 7 for a lord of a great house, to 10 for the King.
In the House and Lands chapter, under the Influence resource description, it notes that an influence of 1-10 is a minor landed knight, 41-50 is a powerful minor family, and 61-70 is the King's family and those of the Wardens of North, East, South, and West. Comparing those to Table 6-5 yields a max Status of 2, 5, and 7 respectively.
While they may all seem in the same ballpark, since the scale for Status is generally only 1-7 (one chart goes to 10), each variation of +/-1 actually changes a lot.
While the chart in the Abilities and Specialties chapter gives the best breadth of differentiate, if you are using the House and Lands rules, you should go with the values from the Influence and Max Status (Table 6-5) because those keep things (theoretically) balanced with other house investments.