What advantages do LL parsers have over LR parsers?

Question

What advantages do LL parsers have over LR parsers to warrant their relative popularity in today\'s parser generator tools?

According to Wikipedia, LR parsing appears to

Answer 1

LL Parsings worst case complexity is O(n^4), whereas LR parsing's worst case complexity is better, O(n^3).

(But no one would ever write O(n^4) grammar.)

https://en.wikipedia.org/wiki/Top-down_parsing