the thistle now costs the same amount as other t1 aa with 50 less hp but in the original balance it was the same price with 50 more hp on average, this was for the t1 bomber hits on the aurura being so strong and to help pad the aeons t1 health pool since the range bonus could be negated by charging directly into them at a fixed position, investigate and maybe buff
Moved to balance forum
It is indeed the only AA that dies to all bombers (except Aeon) in one pass. And seeing your entire army, including AA, dying in one bomber suicide raid is quite demoralizing sometimes ^^
A little +10 HP to bring it to 260HP and resist the sera bomber (and help a little against UEF and cybran) would be good quality of life improvement.