orange stats always have a higher rating (do not ask me why). i had made a screenshot of an example for my guilds forum ... let me look it up, and you'll see what i mean.
this was from a preview-pic

(yes, german :p)
"Burg" = Castle (Grafu)
"Bunkers" = Bunker (Sardo)
"Ruhmreich" = Glorious
"Helden" = Hero
so the orange stat blocked one of the better ones out (which would have appeard as sixth stat at the bottom) while using glorious/hero. the bunker and castle stat were not affected (was a preview pic with the stats from the stones of the other thread, not an actual item, therefore the strange stats like sta/mp

)
edit: ok the detailed explanation is that for the grafu orange stats these have the SAME rating as glorious/hero therefore the old "stat is already on item" kicks in and it cannot be removed with pushing unless you use max. bunker stats.
orange/red tosh stats seem to be pushable by anything that arrives in the near future unless that values change. (currently it seems the next stats with a higher rating are the orange ones on lvl75 chests)