Oh yeah, the anime omitted Mannish Boy's internal dialogue saying that he would never underestimate adults again and would never come back to attack the group.
The Outlaw Star anime is nearly two decades old, and wouldn't grab as much viewers like the Dragon Ball series would. Compared to the Stardust Crusaders anime, which is a modern adaptation of a shonen series set in the late 80s. So far, the higher-ups think that the show can hold the midnight slot for now though that could change when more new shows pop up.
Seriously, Toonami, get rid of JoJo's Bizarre Adventure at this point. Oh wait, that can't happen. It's apparently an important part of anime history. If that's the case, deathslot it. If it's that important to anime history, perhaps it's time to consider that anime history itself is a disgrace, one that should not be mimicked. You didn't have a problem deathslotting One Piece, and by all indications, you don't have a problem deathslotting Naruto *OR* Outlaw Star. That should be a red flag right there. Seriously, Outlaw Star is the deeper work, a classic, AND having *MUCH* more leeway for younger viewership, so why is it given the short straw?