I have to agree with this player asking ultimate league players to stop playing rank.
Reason: Ultimate players usually have been playing way longer or bought many more cards than someone climbing the rank, through the leagues. Making it usually an unfair advantage to the ultimate league player. The Ultimate gains a star if they win, but that star means nothing. Where as some climbing to reach Ultimate gains a star closer to the next league.
Ultimate league players have a choice of playing casual mode, or random mode. So its not like they can't play the game. Ultimate's should concede if they go into rank mode and come against a low level player. If they don't, they will put off new players. This game needs new players, so don't make it harder for them.
Effectively, Ultimate players should be matched to Ultimate level. BUT >>>Stupid<<< EA, PopCap have not done that. Yes you could learn, from playing Ultimate league players, but that learning should not cost you a star in rank - hence why, casual mode does not make you lose a star if you lose against a player.
I've been playing this a game a long time.. so I do think its about time they changed or sorted the rank system.