Look at RFAs and then tell me what the biggest factor in their paycheck is based on. Spoiler alert, it's their offensive production.
It's certainly a major factor, as offense also provides a lot of value to the team, and it is easy to quantify. But when you look at most top teams, you see guys getting paid for more than just their offensive numbers. Because if you aren't willing to pay people to do something, you tend to end up with fewer guys who will do it. Toronto is a pretty good example of what happens when you are only willing to pay guys based on offensive stats.
And Lou has always believed in paying guys based on their value to the team, not on their stats or their supposed role, so he's another good example of what I'm talking about, and makes me not too worried he won't value Pelech appropriately. Because I'll be honest, if I was Pelech and you told me you were only going to pay me based on my offensive stats, I would file for arbitration and walk as a UFA as soon as possible to find a team that appreciates defensive players.