Hi,
I own a Pa1X and played several time a Tyros 1 (not 2): I don't feel all the differences you mention, there are a lot of similar positions they share. That in any case seems more than what Roland offer in G-70, right ?
Just a question: but are you complaining how the chord is recognized (the chord position) or just what it is played back by the arranger once the chord has been recognized ?
Regards