Orochimaru's Gates are the same.
NO THEY ARE NOT BIGGER AND THERE ARE ONLY THREE SHOWN IN THE MANGA. Kish was trolling or Orochimaru's gates actually weakened TBB completely unlike what happened in today's chapter.
this is the mini TBB in front of Orochi's gates
Now, the process of these gates are explained here;
Therefore, by the time it got to Orochimaru the TBB had diminished, which is why the ground looked like this afterwards;
Notice allow the side, the ground isnt leveled as if the impact slip in two. This gives me the impress that TBB had weaken completely already, as shown in todays chapters they didnt just tumble down.
Overall, they are the same gates and Kish could have trolled just to make the 1st seem BA or Orochimaru defended against TBB and we didnt notice that