Hiring panels want you to be excellent and work for them, so your approach to those can be completely different. It's not a necessary politeness to be modest at interview. If they ask a question like this then their fear is that you've produced 10-13 mediocre papers per year but nothing great, in which case they wouldn't want to hire you. They want you to allay this fear. You need to justify to them the value of your work, so that they're confident that you've produced the 1-3 solid papers they expect, and more. You need to justify it in more detail than "well, a top tier journal accepted it", or "I have a high citation count", which means talking qualitatively about your impact on your field and on the work of others. You also may need to convince them that you somewhat understand your own process and success, because they're running a department of interacting individuals, not a paper-factory. If they're going to hire you for facultytenure-track then they want to know that you'll benefit the department, as well as generating research. They won't turn you down for producing too much high-quality work, but they might turn you down if they think the good work you're doing would be more than cancelled out by the negative effect on department morale of you going around telling everyone the secret to success is to put the effort in.