hard to call them. past issue stuff isnt really noteworthy to current, especially after the date a character was stated to have been upgraded.
unsure of exactly what your trying to come to a conclusion about exactly. most of Bullseyes heal time is never shown on panel. he receives an injure and we see him later. in the majority of times its said that he was fixed via surgery. seems your still trying to figure what exactly of his insides have been modified and to what extent. your not going to find an answer, as ive tried to point out to you, as alls thats truly stated is he had work in general done, even when specifics are pointed out that doesnt give a whole lot to go on either way then drawing a conclusion that could be otherwise incorrect,
thats the last ill say on the subject. i already provided you with the direct contact information at Marvel, and im assuming it was ignored.