only thing you got right about Adams is that he was a better blocker.
•Adams was a better receiver - Completely off, Adams routinely dropped catchable balls...you could almost set your watch by him dropping an easy catch that would have been a first down. Did he have good hands? Yes, because we did see him at times make some really nice catches, but being a good receiver is about hands, concentration AND the inner desire that every ball is yours. Despite his good hands, his frequently dropped easy balls (lack of concentration) and low effort at times for balls that weren't thrown right to him, made him not really a very good receiver option. With Williams we don't have a large sample size, but to my recollection he has caught everything we've ever thrown to him that was catchable. Also, I don't recall Williams ever even coming close to having a fumble (unlike Adams early in his career) so the evidence is there (though yes we need more time for definitive assessment) to suggest Williams has good hands and is a good receiver.
•Adams made many more yards after contact - This is also a little deceiving ...Adams was EXCELLENT at one thing in this area, which was using his long arms to stiff arm (not in a powerful way, but more crafty like) defensive backs in the open field to offset them having the angle on him, or keep them off his body while he was getting up to speed. Statistically, Adams probably has many more yards after contact than Williams, but that is the product of only two things: 1) Adams had many many more carries and 2) on a good number of his 50, 60, 70 yard runs he would reach out and touch a DB with that stiff arm 15-20 yards down field and get credit for all that extra yardage as yards after contact. Statistically that is great, but it's misleading because one thing Adams was not is a tackle breaker. The vast majority of the time, once a defender made contact with him he was going down and on those short runs where OL didn't make a big hole he never pushed the pile forward and in fact norally got pushed back for a loss. Williams on the other hand almost always pushes the pile forward for those extra yards, often breaks the first or second tackle when defenders make contact with him, and hardly ever takes a 1 yard loss looking for the big play when 2-3 yards are right there. Williams doesn't have that awesome stiff arm because his arms aren't super long like Adams' but in terms of tougher guys to bring down in the hole or guys who break more tackles when defenders actually make contact with them, Williams has a clear advantage in this area and is visibly the much tougher runner.
•Adams had enough speed - this is the one where you are absolutely furthest from accurate...saying Adams had enough speed, is like saying a twin turbo Lamborghini has a little pep. Adams was FAST as shit, period. He wasn't real quick (which may be where you are mixed up), it took him a lil bit to get up to speed but once there he was among some of the fastest guys that have ever walked our sidelines. His open field speed was elite! Let me tell you this, there are three and only three reasons that Adams had that monster season with so many long runs 1) an OL that often opened four lane highways for him 2) that crafty stiff arm he used so we'll to keep DBs off his body /legs /feet 3) SPEED! Once into open field he was fast with a capital F A S T.
•Williams is very explosive - Yes this is 100% accurate, because he has elite quickness combined with very good open field speed. He doesn't have the top end Adams did, but he is "fast enough" and that combined with his quickness is what makes for a vastly more explosive RB.
•Williams runs with a little bitta shake and bake - Yes, yes he does, because Williams lateral acceleration, agility, elusiveness, and vision are on a whole other planet from Adams. Adams was a straight line guy where he was fast enough to make the defense pay if there was a crease, but he didn't create. Williams creates, he has what Adams has to take advantage when there is a crease, but he also has the ability to make guys miss or cut back and take advantage of something that developed and wasn't by design. Comparing Williams and Adams is similar to comparing Walter Payton and Corey Dillon... saying Payton was clearly the better RB doesn't make Dillon a bum, it just means Payton was better.