There’re important differences.

When you just burn a forest, you release carbon that was in the atmosphere a few years or decades ago. Those trees would die eventually, and most of the carbon would go to the atmosphere anyway.

When you dry a swamp and burn a peat bog, you release carbon that was in the atmosphere centuries ago. Under normal circumstances, that carbon would stay underground for millennia.

Plus the burning of forests in Indonesia to make room for farming palmoil. We're all in this together.