I have trained with Ikeda and Saotome and they are both
very good at Aikido and have Aiki skills, Dan is just on a higher
level, go ask your teachers.
Define aiki as Dan defines it.
It seems to be defined as grounding and breaking internal balance.
Where then is the aiki in sword?
Are you claiming that Saotome Sensei one Ikeda Sensei have trained with Dan much less that they are following him? Ikeda Sensei has been inspired by Ushiro Sensei, who Dan thinks little of, and Saotome Sensei is focussed primarilly on transmitting what he learned from O'Sensei to his students.