Kaiba- Well, we may not count Beat as a wheel which outclasses LLD for attack. If there's a comparison between Beat and LLD, LLD will be predominant. This is most notably seen with the release of Beat, when there were various new combos created. Beat performed great in initial tests, but LLD faced no problems of being outclassed. It was still the better one.
Now, Beat has become extremely unreliable, in comparison to LLD.
Therefore, LLD is only outclassed by the like of VariAres, Phantom and Blitz. And, LLD is also 'out of use' as it cannot KO any of the currently released Defense/Stamina sensations, i.e. Duo and Death, consistently.
So, LLD faced its downfall from two different sides-
Being outclassed in attack.
Being unable to KO the current Top Tiers, and hence out of use.
EDIT- I forgot to mention- Beat's weight also gives it an upper hand over other combos at times. Considering LLD is extremely light in comparison, LLD overall is not better than Beat. The LLD attack combo- MF LLD BD145LRF performs better than Beat IMO.
Please Correct Me If I am Wrong, especially because this is about Attack. I have gone through various Beat threads, and this is the opinion I formed about it. So, there are 99.99% chances of me going wrong...
Team IB Revolutions
Thanks to N0body for the avatar and Synth for the signature!