The L was based on the W , but a comparison, albeit superficial, reveals a number of differences, to 
( ( ( ( ( The L ) ( was ( based ( on ( the W ) ) ) ) ) , ) but ) ( ( ( ( ( a comparison ) , ) ( albeit superficial ) ) , ) ( ( ( reveals ( ( a number ) ( of differences ) ) ) , ) to ) ) )
(ROOT (FRAG (S (S (NP (DT The) (NNP L)) (VP (VBD was) (VP (VBN based) (PP (IN on) (NP (DT the) (NNP W)))))) (, ,) (CC but) (S (NP (NP (DT a) (NN comparison)) (, ,) (VP (ADVP (IN albeit)) (VBN superficial)) (, ,)) (VP (VBZ reveals) (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NNS differences)))) (, ,) (PP (TO to)))))))
There are no differences between the L and the W; both are exactly the same. 
( ( ( ( There ( are ( ( no differences ) ( between ( ( ( the L ) and ) ( the W ) ) ) ) ) ) ; ) ( both ( are ( exactly ( the same ) ) ) ) ) . )
(ROOT (S (S (NP (EX There)) (VP (VBP are) (NP (NP (DT no) (NNS differences)) (PP (IN between) (NP (NP (DT the) (NNP L)) (CC and) (NP (DT the) (NNP W))))))) (: ;) (S (NP (DT both)) (VP (VBP are) (NP (RB exactly) (DT the) (JJ same)))) (. .)))