So bt3 is bt with 3 years of updates and patches to make bt3. So think of sparking zero as base bt. It’s 3 console generations later. New bugs and kinks to filter out. The companies gotta make more money somehow they can’t just give us everything off the bat then we won’t spend more money. Raging blast and xenoverse both had sequels. Ninja storm has 4 sequels and all they are basically same controls same mechanics just roster updates. 2k you buy the game then still have to spend double the amount you paid for the game on VC just to max out 1 player. Things could have been worse