It was a time of war, so Shisui became famous.Yes he doesn't teleport but are you seriously telling me that Sasuke or even Itachi was on par with him in speed with the body Flicker?? If it was like that then wouldn't a lot more people be called Master of Body Flicker?? He was known by everyone not just by having the eye with the most powerful Genjutsu but also for his speed using Body Flicker. You are crazy dude. Yes Sasuke is fast but is not in the top 10 in my opinion, body flicker or other wise.
If you look at what Itachi and Sasuke have done to Kage level opponents, they'd easily earn a similar reputation:
Databook said:[Godlike speed]
Adding up to his innate talent, Orochimaru's strength — "cursed seal" included — granted him a power a normal shinobi could not even dream of. What one may find especially interesting is his speed, that has stood out ever since he was a genin. When that godlike speed is supported by Sharingan's reflexes, anyone standing before Sasuke is unworthy of existence.
In a blink he's in front of his opponent, then a flash of sword...!! Before his speed, even Akatsuki members hold their breath in awe.
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And keep in mind, these guys losing track of the Uchiha are Kage class.
Average Jōnin would stand no chance against that speed.
So in a time of mass-war, Sasuke/Itachi could flicker-blitz 99% of ninja.