They'd all be weaker than in the main timeline and Tenshinhan probably wouldn't have the Shin Kikoho without training intensely due to the warning given by Trunks.
The Punk Hazard/Dressrosa saga took what seemed like 10 years to finish and the only payoff was a beefed up version of the Alabasta arc with Luffy gaining more followers afterwards. I just got to nearly the end of Thriller Bark in my reread (they're fighting Oz/Oars right now) and want to...
Going to get to volume 51 or so this weekend. Thriller Bark is really heating up, Usopp defeated Perona (in a manner that makes sense unlike his later battle with the toy bitch) and Zoro is going up against the zombie who is using Brook's shadow.
AT said he was programmed to be gentle. My guess is that his failure as an android is due to him prioritizing peace which would make him disobedient to Gero and Cell (which he was right about).
He was loyal to his programming, and was built to be gentle as to avoid him being destroyed due to his "father" not wanting him to die in combat. He was probably just destroyed by #17 and #18 when they destroyed Gero and blew up his lab in the future timeline.