It means you need to come up with something other than your assumptions or inane thought experiments. If 7% of the people on the list die before they receive a transplant, that means the odds are that no one on the list died from being denied this heart. So, you need to come up with some statistics or data or actual evidence to support your claim that someone did die.
No, it means you don't understand the math involved.
We have organ A. The demand is 1000/yr. The supply is 10/yr. 1% die of other causes, 980/yr die from the lack of an organ.
Organ B has a better supply. The demand is still 1000/yr but the supply is 500/yr. You still have 1% other deaths, now 490/yr die of the lack of an organ.
Note that the supply changed by 490/yr and the deaths also changed by 490/yr. It's 1:1 even though we dropped from 98% to 49%. In other words, the percentage doesn't matter.
(In practice there is the risk of the operation that will change this a bit. The basic pattern is still there, though.)