And how it bypasses it ? By manipulating gravity that trascend dimensions (in the sense that it's something present in every single one of them and is born out of nothing). in every single one of them he can affect them all at the same time and be able to bypass the infinite dimensional walls of love train, while also blitzing fv before he could hide from tusk sight in another dimension that love train is made of.
https://static.wikia.nocookie.net/5fb4a9ff-ebed-4e4f-816e-a8389bdf748a/scale-to-width/755
https://i.pinimg.com/736x/ca/c9/82/cac9824af76dc3865a4e84b41426eec4.jpg
Tusk control grvity that can bend space-time, or rather he can produce the infinite spin that in turn control the gravity. D4C also needs gravity otherwise this could happen:
https://static.wikia.nocookie.net/5ec9ef79-87dd-4720-b0a0-6c0f6609eebb
https://comicvine1.cbsistatic.com/uploads/original/11140/111405261/7637921-img_20200822_180742.jpg
Tusk act 4 gravity control completely crushes fv valentine one. Not only he could pierce through these dimensions, he could forcefully open the dimensional barrier that is made by infinite wall of other dimensions.
Ball braker could alredy break through dimensions and tusk is his equal ( if not higher due to his higher level of rotation)
A visualization of the energy of Gyro's steel balls, breaking through dimensions . The art of the steel balls also ultimately turns into a Stand ability. I made this Stand appear to explain that.Hirohiko Araki, JOJOVELLER Stand Guide page 258
Ger can nullify both act 4 and love train by jojoveller + jojo a gogo statements about him being the ultimate stand hability that can bring everything to nothing.
化したレクイエム の能力は、存のス タンドと間じ物差し で比べるのは不可能。 あらゆる意志力をぜ ロにしてしまう能(or 最)力は、 本体のジョルノでさえも気 プいていないのだ。=~= "The ability of "Requiem" selected by "Arrow" is impossible to compare with the existing Stand and measuring rod. Even Giorno, the main body, doesn't care about the power that makes all willpower go away." from jojo a gogo.
And this statement is still valid in jojoveller as it says:
For starters funny valentine describes twoh powers as powerful, terrifying and infinite. Then later, no matter how much fv tried to escape, he was teleported again and again to dio's world. Fv outright stated that he couldn't ever hope to beat dio, not even if he had the entire holy corpse ( literally love train). Finally, they fight, fv loses and dio literally erases fv from the existence of every universe, completely nullifying D4C as a whole. And this dio is weaker than final chapter dio where he gets all of the holy corpse + heaven a second time.
https://www.youtube.com/watch?v=xmhd-P6PLS4&t=485s
He also nullified act 4 and ger with minimal effort ( Ro needs to be manually activated and he reacted to ger rtz, that alone is insane!). Dio's reality warping and range would give him the win against d4c:LT.
Video time : 15:38, 53:05.
