First off, Macross was 1982. The second thing to remember is that most of the things the characters are talking about are ideas which were first presented in Mobile Suit Gundam. Like I said before, major plot ideas, characters, and even dialouge was formed from mobile suit gundam. Everything is based around that. Mobile Suit Gundam is the original in any gundam series idea you will see. The dialouge is virtually the same (Except of course you have to change things for the sake of different sides and characters).
Your still failing to understand that mobile suit gundam is the original idea behind all of these animes. Without mobile suit gundam you wouldn't have at least half the plot that it displays. You wouldn't have half the character conflicts that take place. Seed has not displayed anything extra ordinary that Mobile Suit Gundam or 08th hasn't presented before. It only took it and twisted it to fit the series.
Also here's the years the earlier series were created.
1979-1980 Mobile Suit Gundam
1985-1986 Gundam Zeta
1986-1987 ZZ
1988 Char's Counterattack
1989 Gundam 0080 (Big jump in years)
1991 Gundam 0083 (Explains why the animation is similar)
1991 Gundam F-91
1993-1994 Victory Gundam
1994-1995 G Gundam
1995-1996 Gundam Wing
1996 Gundam X
1996 08th MS Team
1999 Turn A Gundam
2003-2003 Gundam Seed
2004 Gundam Seed Destiny
There's your time line for the gundam series. You can see where the animation fits in with the timeline itself.

