I've also asked this myself some time ago. But now, knowing more, I think you can't really compare, cause there are much less reports here of the treatment of Dr. Simka than of Dr. Dake, and as far as I know Dr. Simka startet the treatment much later. Perhaps he already had learned from the experiences of Dr. Dake. If I got it right he first used rather bigger stents, making those shoulder problems, and then went on with smaller ones.
"There is only one good, knowledge, and one evil, ignorance." Socrates