It says by "any means" and that's is exactly what it means. Nothing can escape. You can't malphite ult out, you stop at her ult wall. Sion bounces like a ping-pong ball its hilarious. Tahm can eat you but when he spits you out you snap back to being inside her ulti. You can't ekko ult out. Vi can ult someone, but only the damage and knockup apply, she doesn't move. No summoners or regular spells can escape. You can't be poppy ulted out. You can channel pantheon ult and escape but only if her ult ends before his channel is done, otherwise he's stuck. You cant ryze ult out. I've seen them all tested, and unless its channeled after her ult ends there is no way possible to escape. Qss or spellshields dont work for escaping, only for negating her ult as it's cast.