However, if I was actually faced with this problem, I'd use End, Ctrl + Left, Ctrl + D, baz, which is a total of 7 keystrokes. (if you don't release Ctrl)
The vim example was 8 keystrokes. (" is shift + ') I have no doubt that you could manufacture an example that shows a benefit for vim, but I think that the advantages are overestimated by heavy vim users.
Edit: Your longer string example is a good example of a task that's more efficient in vim.
A commonly overlooked aspect to the vim way of describing what you're doing in verbs and nouns and prepositions is that the "." character in vim means "repeat my previous edit". So if you can find a way to "phrase" your edit as a single change (i.e., 6sasdf<esc> would delete six characters starting under the cursor and leaving me in insert mode, then insert the letters asdf and exit insert mode) instead of many (i.e., xxxxxxiasdf<esc>, deleting 6 characters separately, entering insert mode and entering the letters asdf) then you can go to another spot in the text and just hit . to repeat the edit. I've given a contrived example here, but this is enormously powerful. It's why there are several ways to enter insert mode: "i" to enter under the cursor, "a" for after the cursor, "I" for first non-whitespace character on the line, "A" for after the last character on the line, "o" for opening a new line below the cursor, "O" for above, "c"+motion for deleting through the motion and leaving in insert mode, count+"s" for removing count characters starting from cursor and leaving in insert mode. There are more....I'll stop :)
Sublime Text supports multiple cursors, which I find to be a more natural way to do things where you might use those tiny repetitions-- you select all the regions you want to edit first (usually by repeatedly adding the next match to the selection), then any typing or movements you do occur in parallel.
I don't know why other Vim users focus on number of keystrokes.
In his example, what is more important is that you are 'describing' what you want to do with text with commands.
So when you have
var foo1 = "bar";
var foo2 = "hello hi";
var foo3 = "when and why";
You can use the same command [cib"] to change the value assigned to foo1/foo2/foo3. You are describing your change semantically i.e. I want to change word inside the double quotes.
In Sublime and other editors, it matters what the assignment is and you have to use different approach in each scenario.
Frankly, as I type at 70wpm, I don't care about saving a few keystroke here and there.
However, if I was actually faced with this problem, I'd use End, Ctrl + Left, Ctrl + D, baz, which is a total of 7 keystrokes. (if you don't release Ctrl)
The vim example was 8 keystrokes. (" is shift + ') I have no doubt that you could manufacture an example that shows a benefit for vim, but I think that the advantages are overestimated by heavy vim users.
Edit: Your longer string example is a good example of a task that's more efficient in vim.