That's correct. The store guy told me that the Macross toys don't sell very well and they need to put items that sell more and faster so they don't keep many Macross item sitting around, floor space is expensive there.
As far as Macross + Gundam goes..
Gundam = Star Wars + Star Trek combined.
Macross = Matrix Trilogy.
The reason, when Macross 1st came out it was considered a very fresh design and very interesting ideas with valks that can change 3 modes and has SDF1 and then the whole Zentraedi thing.. People followed it and was excited when Macross Plus came out but the real fans hated it.. Which is very similar to Matrix Trilogy, it came and went ..
Gundam, now that's a huge franchise in Japan. From Gundam stores to just about every mech in Gundam has seen a model kit or a MSiA action figure.
Of course in America, the Gundam fad is over because we were spoiled by Gundam Wing and didn't quite absorb the UC Gundam series... Had Gundam came over at the time that the Transformers did, it would been a different story.