btw i've watched SEED (and a bit of 00 which looks alright but nothing beats Wing), but didn't really enjoy it other than when both of them cracked a thing that looked like a peanut and their eyes got glowy like supersayins and they beat up everyone lol oh yeah plus a girl that has PINK hair....right..... man look what staying up has done to me lol...can't sleep after remembering Part C of exam
Ive seen wing, seed/destiny and 00 and I wud have to say 00 is the best of the 3 no doubt.
Storywise- seed is not very good, Wing's is mediocare first 30 eps and excellent last 20 or so eps. 00's storyline is intersting enuff that it is able to be a medium for all the action scnees in the anime so that it does not seem repetitive. Graphics wise 00>seed>wing.
Character wise, seed's cast is most lacking. Wing has trieze and Zechs as the only two characters who you can really like (well duo as well but hes a pretty dodgy pilot). Gundam 00 has a wide range of character types. Strong characters on the villains as well as neutral and ally side.
Gundam models of wing are arguably the most bland, even for its time they were nothing too special, the grunt suits looked far too similar to each other and they were not even remotely cool, maybe epyon as the only standout, while seed we all know had two of the most famous suits which we all love. 00 has perhaps the most interesting and diverse mobile suits of the 3 series.
So wing beats 00 in.............pretty much just the end of the series kik ass stroy but you cant discount the fact that for the first 30 episodes, you're sitting there just thinking wtf is going on, who is this new faction. So I think, wing can easily be beaten as a series, by 00 and I would put Seed maybe on equal terms with it (not story wise but overall). I highly doubt wing is anywhere near the best series of gundam and 'unbeatable'.
Btw: Seed may have a pinkhead, but Wing has relena. Relena is annoying anyway you look at her, Lacus on the other hand isn't so bad.