Bowser is a Koopa and not a turtle.
Still yeah, I don't understand why there is so much talk about that second hole, it's not possible to see it in game and that's not the one in which Ridley escape in Metroid Other M.
That would be the first one, look at the cutscene after the Ridley fight in Other M and you'll see that Ridley use fire against it before he go starfox style and barrel roll into it, right now Ridley didn't do it.
Knowing this and the fact that the bridge is destroyed, we can assume that the battle in SSB4 is supposed to be at the same time than the Ridley boss battle in Other M, but there's two things missing it's that the case.
Of course, Samus isn't there, she is a playable character, but where is Ridley at this point ?He should be flying around the stage or on the stage itself attacking the players.Well with all the pictures we had so far we can also assume that he is not here so yeah, no stage hazard Ridley.
Boss fights and assist trophies not having been confirmed for this game so far that leave us with two options for now :
-First is that there is no Ridley appearance in that game which would be strange with the fact knowing that this is Ridley's stage, at the moment of his Boss fight and the "he could appear at any second now" comment, but it's not completly impossible as we have seen with Norfair in Brawl, even if Ridley did appear elsewhere in that game.
-Or that Ridley is playable, this would explain why he haven't appeared so far and would allow a fight with Ridley at the same moment than in Metroid Other M.