It's called a "suicide burn" for a reason. Even with just one engine, the thrust/weight ratio for the nearly-empty stage makes landing difficult. The engine c

It's called a "suicide burn" for a reason. Even with just one engine, the thrust/weight ratio for the nearly-empty stage makes landing difficult. The engine can't throttle down enough. So you can't just come to a near-hover, and then ease you way onto the landing pad. You have to cancel your velocity right at touchdown, with little margin for error.