When comparing JSLint vs SideBar Enhancements, the Slant community recommends SideBar Enhancements for most people. In the question“What are the best plugins for Sublime Text?” SideBar Enhancements is ranked 2nd while JSLint is ranked 18th.
Ranked in these QuestionsQuestion Ranking
Pros

Pro Enforces a very high standard
Since it's relatively old (it was made in 2002) and made by Douglas Crockford, considered a JavaScript God by many JavaScript programmers. It was created to enforce what in Crockford's experience are the good parts of JavaScript. This means that it's considered by many the best way to enforce the highest standards in JavaScript.
Pro No setup required
JSLint comes preconfigured and ready to be used.
Pro Adds goodness to context of clicks
Pro Adds a ton of functionality to the sidebar
- Move to trash
- Clipboard
- Open in browser
- Copy the content of a file as data:uri base64
- Close, move, open and restore buffers affected by a rename/move command
- Copy as tags img/a/script/style
- Duplicate
- Preference to control if a buffer should be closed when affected by a deletion operation
- Allows to display "file modified date" and "file size" on statusbar
Cons
Con Highly opinionated
JSLint has a very strict, dogmatic ruleset that cannot be changed or warnings turned off. So much so that rarely any code will pass JSLint tests. It's reasonable to evaluate if all warning are worth changing.

Con Difficult to know which rule is causing which error
Since you can't edit the rules and it's not programmed in a way to display the rule that's being broken, it's difficult to understand which rule has been broken.
Con No way to support ESnext
Con Data collection
SE ships your data off to Kite.
Con ST2 version is not maintained anymore
The last ST2 version is available here. All future functionality will be added only to the ST3 version.
