Wikipedia makes us believe, that Christopher Marlowe had nothing to do with both publications since he had no control over the play in performance [He died in 1593]:..” so it was possible for scenes to be dropped or shortened, or for new scenes to be added, so that the resulting publications may be modified versions of the original script.-
On 22 November 1602, the diary of Philip Henslowe recorded a £4 payment to Samuel Rowley and William Bird for additions to the play, which suggests a revival at that time.
How could it happen that the popular play of Christopher Marlowe, staged prior to his death 1593, was printed only 10 years (A-text Q1) and 20 years (B-text Q2) after his death. - Who felt the need to make substantial additions to the play in 1602 and who wrote ( when ?) the significant new parts of the B-Text, published in 1616, the year of Shakspere's death ?
The only plausible explanation is, that the author himself in 1616 (The true Shakespeare] via the his figure of Dr. Faustus reveals his biographical secret that he himself "was limited for four and twenty yeares, to breathe on earth?" ( first performances of Dr.Faustus 1592 ) and that they had cut his Body with their swords, or hew'd this flesh and bones as small as sand, yet rapidly , in a minute had his spirite return'd. -Within days after his alleged death 1593 Marlowe changed identiy and published under pennames/pseudonyms such as Shakespeare and many others (read Summary). The first literary Opus of Shakespeare "Venus and Adonis" (s.blog xxx) appeared only weeks after Marlowe's disappearance!
I see no reason or motifs why the B-Text was kept under lock for 20 years and who else other than the author himself could have added such significant "biographical" information!