If you want to engage someone at work (who works below their capacity and they are making the effort to improve) don’t compare them with someone else in your organisation.
Absolutely do not compare them with people in some other organisation, or their practices.
Ever wonder, why someone who have performed exceptionally well in one organisation, then goes to a new organisation to fail miserably ?
This behaviour comes from our need to compare numbers: they are doing well, we are not.
Humans are not numbers. With the advent of big data, managers want to tag everything to a number, because it makes decision making easier.
Yet if you really want to develop people, learn to trust them and coach them.
Invest your time to learn why they are working in your organisation ?
What keeps them motivated ?
People stick with managers who gets them.
I have seen people working happily at a lower salary for years. They love their manager. I have seen Managers who cannot keep their team members from leaving them, despite offering higher salaries. Yes, there are many reasons to switch places, but have you ever wondered what is the first thing that triggers people to look elsewhere ?