hosannainexcelsis said:
The continuation of that tweet makes it sound like they are talking about Trails in the Sky in addition to the other two games.
It goes pretty much like this:
Poster makes these three comments back-to-back: "Your original statement about the Falcom deal made it sound like the Trails in the Sky trilogy was a lock for localization. But now you're on "pretty shaky ground with this title". Plus, no offense, but your track record with RGC and HMH doesn't give me cause for hope. (Yes, poor sales, I know. Still sucks.)"
In response, XSEED tweets this: "We never made any promises to localize either sequels. :/ We'd love to, and we do everything we can to put out titles, but-."
They're referring to RGC and HMH, but it's used as a sort of justification in the overall Trails argument.
Edit: Actually, wait a minute... XSEED's comment could be in direct response to the "I thought the trilogy was on lock" comment, and "either games" could refer to Trails instead.